The system for referencing in our journal is the CITATION―SEQUENCE system, which requires a specific style for editing both in-text and end text references.
In-text references
In this system, numbers are used within the text to refer to the end text references. The in-text references are numbered, and the end references are ordered within the list in the sequence in which these numbers appear in the text. The in-text reference numbers must be placed within square brackets, […], located immediately after a word with a space between them. No punctuation mark should be present between the word and the bracketed reference number. If there are only two consecutive numbers, or a set of numbers that are not in continuous sequence, they should be separated by a comma with no space. For more than two numbers in a continuous sequence, the first and last numbers should be connected with an en-dash (or a hyphen, if preferred). The examples below, taken from actual articles, are self-explanatory for this style.
EXAMPLES
… and other biomedical applications [1].
… other cell types have been grown on fibroin [20,22].
… with respect to reconstructing musculoskeletal and vascular tissue [2–8], a small number of …
… after childhood [10]; most …
End text references
Editing of the end text references in the citation-sequence system is described below through examples for various types of publications. The citations in the list of references at the end of the manuscript should be numbered in the order they appeared in the text.
Journals
The general format for citation of journal articles is as follows:
Author(s). Articol title. Journal title. Year; volume (issue): page interval.
The issue number is optional, and will not be included in our examples. If the author decides to insert issue numbers, this must be done in all references except for journals that do not have issue numbers.
Articles in some journals (usually the open access type) have volume number but no pagination (and sometimes no issue number). Each article is allocated a number, and this is the only available element. In such cases, the volume and article number must be cited, followed by DOI details. Optionally, the total number of pages can be added after the article number within round brackets. If a journal has no volume and/or issue numbers, the month should be included instead, and placed after the year.
EXAMPLES
Gumbiner BM. Cell adhesion: the molecular basis of tissue architecture and morphogenesis. Cell. 1996; 84:345–357.
Ruoslahti E. RGD and other recognition sequences for integrins. Annu Rev Cell Dev Biol. 1996; 12:697–715.
Lydon MJ, Minett TW, Tighe BJ. Cellular interactions with synthetic polymer surface in culture. Biomaterials. 1985; 6:396–402.
Ahearne M. Introduction to cell-hydrogel mechanosensing. Interface Focus. 2014; 4:20130038. DOI: 10.1098/rsfs.2013.0038.
Chirila TV, Suzuki S, Bray LJ, Barnett NL, Harkin DG. Evaluation of silk sericin as a biomaterial: in vitro growth of human corneal limbal epithelial cells on Bombyx mori sericin membranes. Prog Biomater. 2013; 2:14 (10 pages). DOI: 10.1186/2194-0517-2-14.
Hogerheyde TA, Suzuki S, Stephenson SA, Richardson NA, Chirila TV, Harkin DG, Bray LJ. Assessment of freestanding membranes prepared from Antheraea pernyi silk fibroin as a potential vehicle for human corneal epithelial cell transplantation. Biomed Mater. 2014; 9:025016 (9 pages). DOI: 10.1088/1748-6041/9/2/025016.
Sampat P. Groundwater shock: the polluting of the world’s major freshwater stores. World Watch. 2000 Jan–Feb:10–22.
The journal title must be in italic letters. Note that the abbreviated words in the journal title shall not be followed by full stops, however a full stop must be placed after the last word in the journal title, whether an abbreviated word or not.
Do not insert “and” before the last author; a comma is both necessary and sufficient. When there are 2 to 10 authors, all of them must be listed. If more than 10 authors, the first 10 authors should be listed followed by a comma and “et al.”.
When an organization serves as an author, its full name shall take the place as the author. If both the name of the author and the name of organization appear on the title page of an article, use only the name of the author. If an article does not have any identifiable author, begin the reference with the title. The use of “anonymous” or “anon.” is not permitted.
For articles in a language different from English, provide a translation of the title within square brackets, and specify the language of the original article at the end of the citation. The titles in character-based languages (Chinese, Japanese, Korean) do not have to be romanized (i.e. rendered into Latin letters), but directly translated. For titles in German language, follow the conventions regarding word capitalization. The examples below, taken from the CSE Manual, illustrate such situations.
EXAMPLES
Euvrard S, Kanitakis J, Claudy A. Tumeurs cutanées chez les greffes d’organe [Cutaneous tumors in organ transplant recipients]. Presse Med. 2002; 31:1895–1903. French.
Jin XH, Huang WQ. [Research progress in immune regulation of gonadorelin]. Sheng Li Ke Xue Jin Zhan. 200; 31:169–172. Chinese.
Gorge G, Kunz T, Kirstein M. Die nicht-chirurgische Therapie des iatrogenen Aneurysma spurium [Non-surgical therapy of iatrogenic false aneurysm]. Dtsch Med Wochenschr. 2003; 128:36–40. German.
The titles of journals must be abbreviated according to current standards. If in doubt, the authors should consult various sources available. A comprehensive list of such sources has been provided in the CSE Manual, p. 643, Appendix 29.1.
Volumes with supplements or parts should be edited as indicated in the examples below (where the number “25” was chosen as an example for the volume number).
EXAMPLES
25 Suppl 25 Suppl 2 25(Pt 1) 25(Pt 3 Suppl) 25 Suppl 2 Pt 1
In many journals, an article may contain a header such as “research article”, “original research”, “review”, “short communication”, “news”, “case report”, “case study”, “commentary” etc. Such headers are not to be included in the title of the article unless they are integral part of the title as indicated in the table of contents of the journal. In rare occurrences, an article does not appear to have any discernible title; in this case, the author(s) should create a title from the first few words of the text and place it within square brackets.
Journal articles as forthcoming material
The articles accepted by the editor, or in press at the publisher, are to be considered as forthcoming material that is allowed as end text references, and should be edited as in the example below.
EXAMPLES
Chirila TV, Suzuki S, Papolla C. A comparative investigation of Bombyx mori silk fibroin hydrogels generated by chemical and enzymatic cross-linking. Biotechnol Appl Biochem. Forthcoming 2017.
Books
The format indicated below is to be used according to the citation-sequence system.
Author(s). Book title. Edition. Place of publication: publisher; Year. Extent (pagination).
Pagination (page interval) is necessary to be indicated only when a certain section of the book is of actual interest in the context of the manuscript. For citing a chapter, its full title must be given, followed by “In:”. The page interval of the cited chapter shall be indicated at the end of citation.
EXAMPLES
Fraústo da Silva JJR, Williams RJP. The biological chemistry of the elements: the inorganic chemistry of life. 2nd ed. Oxford (UK): Oxford University Press; 2001.
Cooper GM, Hausman RE. The cell: a molecular approach. 6th ed. Sunderland (MA): Sinauer Associates; 2013.
Williams D. Essential biomaterials science. Cambridge (UK): Cambridge University Press; 2014. (Cambridge texts in biomedical engineering).
Pébay A, editor. Regenerative biology of the eye. New York (NY): Springer; 2014. (Stem cell biology and regenerative medicine).
Casaroli-Marano RP, Zarbin MA, editors. Cell-based therapy for retinal degenerative disease. Basel (Switzerland): Karger AG; 2014. (Developments in ophthalmology; vol. 53).
Chirila TV, Harkin DG. An introduction to ophthalmic biomaterials and their role in tissue engineering and regenerative medicine. In: Chirila TV, Harkin DG, editors. Biomaterials and regenerative medicine in ophthalmology. 2nd ed. Amsterdam (The Netherlands): Elsevier Ltd; 2016. p. 1-14. (Woodhead Publishing series in biomaterials; no. 12).
Do not insert “and” before the last author; a comma is both necessary and sufficient. When there are 2 to 10 authors, all of them must be listed. If more than 10 authors, the first 10 authors should be listed followed by a comma and “et al.”.
An e-book should be cited as in the following example.
EXAMPLE
Blumenberg M, editor. Melanin. Rijeka (Croatia): InTech; 2017 [accessed 2017 Mar 6]. http://www.intechopen.com/books/melanin.
Conference proceedings and papers
There is a significant variety in citing these sources as end text references, and they are typically associated with difficulties due to incomplete and non-uniform information. The following examples taken form the CSE Manual will cover most situations. Note that no letter italicization is to be used in editing these references. The rules for place of publication, publisher, and date of publication (year) are the same for conference proceedings as they are for books.
The authors should be aware that the conference proceedings are generally published by less known institutions, and seldom by established publishers.
EXAMPLES
Callaos N, Margenstern M, Zhang J, Castillo O, Doberkat EE, editors. SCI 2003. Proceedings of the 17th World Multiconference on Systemics, Cybernetics and Informatics; 2003 Jul 27–30; Orlando, Fl. Orlando (FL): International Institute of Informatics and Systematics; 2003.
Lee DJ, Bates D, Dromey C, Xu X, Antani S. An imaging system correlating lip shapes with tongue contact patterns for speech pathology research. In: Krol M, Mitra S, Lee DJ, editors. CBMS 2003. Proceedings of the 16th IEEE Symposium on Computer-Based Medical Systems; 2003 Jun 26–27; New York. Los Alamitos (CA): IEEE Computer Society; 2003. p. 307–313.
Sasaki Y, Nomura Y, editors. Symposium on Nasal Polyp; 1984 Oct 5–6; Tokyo, Japan. Stockholm (Sweden): Almquist & Wiksell; 1986.
Church JA, Marshall G, Lang W. Thrombotic thrombocytopenic purpure (TTP) in an HIV-infected child [abstract]. In: Morisset RA, editor. V International Conference on AIDS: the Scientific and Social Challenge; 1989 Jun 4–9, Montreal. Ottawa (ON): International Development Research Centre; 1989. p. 494.
Unpublished material
There are three types of unpublished material that are allowed to be cited as references in the journal.
(a) Communications or posters presented at meetings, which were never published except for being listed (accompanied by an abstract or not) in the conference flyers, can be cited following the model below. This type of unpublished material is the only one permitted as an end text reference.
EXAMPLES
Suzuki S, Delcroix O, McKirdy N, Chirila TV. Injectable silk fibroin hydrogels for ophthalmic delivery systems. Paper presented at: ARVO–Asia 2017. The Association for Research in Vision and Ophthalmology–Asia Meeting; 2017 Feb 5–8; Brisbane, Australia.
(b) Research results, not yet published, either from the author’s laboratory or from other laboratories.
(c) Personal communications, such as those originating from conversations, correspondence, official documents, or presentations at informal gatherings.
The materials under (b) and (c) are not allowed as end text references. They must be placed in the running text within round brackets. No italic letters shall be used in these citations. Additional details are allowed to be included within the brackets, as in the examples below.
Preferably, the author should provide with the submission a written permission from the cited person or organization. If such permission is mentioned in the Acknowledgements section, the additional statement “see Acknowledgements” should be also included in the text.
EXAMPLES
… (2016 Johnson, unpublished results)
… (2005 Smith, letter to the author)
… (2003 Roberts, presentation at the staff meeting of …)
… (2010 Society for Biomaterials, internal memorandum; see Acknowledgements)
Patents
The general format for a reference to a patent is illustrated through the following examples.
EXAMPLES
Kubota S, inventor; Ogita Biomaterial Laboratories Co., assignee. Wound-covering materials and wound-covering composition. United States patent US 5,834,007. 1998 Nov 10.
Chirila TV, Constable IJ, Cooper RL, inventors; Lions Eye Institute of Western Australia, Inc., assignee. Method of making photoprotective hydrophilic polymer and ocular devices thereof. United States patent US 5,252,628. 1993 Oct 12.
Legeais J-M, Renard G, Anton M, inventors; France Chirurgie Instrumentation, assignee. Implant cornéen [Corneal implant]. French patent FR 2,649,605. 1989 Jul 13.
Hennig G, Lund O-E, inventors; Gerhard Hennig, assignee. Keratoprothese [Keratoprosthesis]. German patent DE 2,705,234. 1978 Aug 17.
The officially established 2-letter country codes are available in ISO 3166-1-alpha-2, which is the international standard for country codes, and can be accessed at:
https://www.iso.org/obp/ui/#search or at: http://data.okfn.org/data/core/country-list
A selected list of the 2-letter codes is also available in the CSE Manual, p. 647, Appendix 29.3.
Do not insert “and” before the last author; a comma is both necessary and sufficient. When there are 2 to 10 authors, all of them must be listed. If more than 10 authors, the first 10 authors should be listed followed by a comma and “et al.”.