How to format your references using the Complex Analysis and Operator Theory citation style

This is a short guide how to format citations and the bibliography in a manuscript for Complex Analysis and Operator Theory. For a complete guide how to prepare your manuscript refer to the journal's instructions to authors.

Using reference management software

Typically you don't format your citations and bibliography by hand. The easiest way is to use a reference manager:

PaperpileThe citation style is built in and you can choose it in Settings > Citation Style or Paperpile > Citation Style in Google Docs.
EndNoteFind the style here: output styles overview
Mendeley, Zotero, Papers, and othersThe style is either built in or you can download a CSL file that is supported by most references management programs.
BibTeXBibTeX syles are usually part of a LaTeX template. Check the instructions to authors if the publisher offers a LaTeX template for this journal.

Journal articles

Those examples are references to articles in scholarly journals and how they are supposed to appear in your bibliography.

Not all journals organize their published articles in volumes and issues, so these fields are optional. Some electronic journals do not provide a page range, but instead list an article identifier. In a case like this it's safe to use the article identifier instead of the page range.

A journal article with 1 author
Shubik, M.: RETROSPECTIVE. John Forbes Nash Jr. (1928-2015). Science. 348, 1324 (2015)
A journal article with 2 authors
Schiermeier, Q., Smaglik, P.: Homeward bound European Union. Nature. 433, 440–441 (2005)
A journal article with 3 authors
Forde, S.E., Thompson, J.N., Bohannan, B.J.M.: Adaptation varies through space and time in a coevolving host-parasitoid interaction. Nature. 431, 841–844 (2004)
A journal article with 4 or more authors
Aviles-Jimenez, F., Vazquez-Jimenez, F., Medrano-Guzman, R., Mantilla, A., Torres, J.: Stomach microbiota composition varies between patients with non-atrophic gastritis and patients with intestinal type of gastric cancer. Sci. Rep. 4, 4202 (2014)

Books and book chapters

Here are examples of references for authored and edited books as well as book chapters.

An authored book
Goshtasby, A.A.: Theory and Applications of Image Registration. John Wiley & Sons, Inc., Hoboken, NJ (2017)
An edited book
Raś, Z.W., Wieczorkowska, A.A. eds: Advances in Music Information Retrieval. Springer, Berlin, Heidelberg (2010)
A chapter in an edited book
Rebeiro, C., Mukhopadhyay, D., Bhattacharya, S.: Advanced Time-Driven Cache Attacks on Block Ciphers. In: Mukhopadhyay, D. and Bhattacharya, S. (eds.) Timing Channels in Cryptography: A Micro-Architectural Perspective. pp. 71–80. Springer International Publishing, Cham (2015)

Web sites

Sometimes references to web sites should appear directly in the text rather than in the bibliography. Refer to the Instructions to authors for Complex Analysis and Operator Theory.

Blog post
Luntz, S.: Canada And Nasa Partner To Intercept A Potentially Hazardous Asteroid,


This example shows the general structure used for government reports, technical reports, and scientific reports. If you can't locate the report number then it might be better to cite the report as a book. For reports it is usually not individual people that are credited as authors, but a governmental department or agency like "U. S. Food and Drug Administration" or "National Cancer Institute".

Government report
Government Accountability Office: Health Information Technology: Federal Agencies’ Experiences Demonstrate Challenges to Successful Implementation. U.S. Government Printing Office, Washington, DC (2009)

Theses and dissertations

Theses including Ph.D. dissertations, Master's theses or Bachelor theses follow the basic format outlined below.

Doctoral dissertation
Thixton, H.L.: Identification of Site-Specific Mycorrhizal Fungi Associates of the Federally Threatened Eastern Prairie Fringed Orchid (Platanthera leucophaea) in Illinois, (2017)

News paper articles

Unlike scholarly journals, news papers do not usually have a volume and issue number. Instead, the full date and page number is required for a correct reference.

New York Times article
Crow, K.: These Political Button Men Are Relic Makers Now, (2000)

In-text citations

References should be cited in the text by sequential numbers in square brackets:

This sentence cites one reference [1].
This sentence cites two references [1, 2].
This sentence cites four references [1–4].

About the journal

Full journal titleComplex Analysis and Operator Theory
AbbreviationComplex Anal. Oper. Theory
ISSN (print)1661-8254
ISSN (online)1661-8262
ScopeComputational Theory and Mathematics
Applied Mathematics
Computational Mathematics

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