# How do I properly cite this German-language paper?

I am currently converting a bibliography for a paper (which I did not write) into bibtex and I am having trouble understanding the citations in the image below: (these are not my own, this is just an example how other authors cited the papers I am interested in)

I do not have very much experience with German-language publications, and I've been told that they have some special rules associated with them such that that nouns should always be capitalized, but I can't find a source that provides a lot of detail.

What is the meaning of the two dates in citations such as this (I've also seen some with two sets of page numbers) and how should I put it into a bibtex entry? This is what I was given:

\bibitem[Cig98]{Cig98} J. Cigler,
Operatormethoden f\"ur $q$-Identitäten. VI. Geordnete Wurzelb\"aume und $q$
Catalan-Zahlen,
\"Osterreich. Akad. Wiss. Math.-Natur. Kl. Sitzungsber. II 206 (1997), 253
-266 (1998).


and this is what I've changed it to so far

@article{Cig98,
Author = {J.~ Cigler},
Journal = {\"Osterreich. Akad. Wiss. Math.-Natur. Kl. Sitzungsber. II},
Title = {{O}peratormethoden f\"ur $q$-{I}dentit\"aten.~ {VI}.~ {G}eordnete {W}urzelb\"aume und $q$-{C}atalan-{Z}ahlen}},
Year = {1997},
Volume = {206},
Pages = {253--266}


Is this okay so far? How do I finish properly entering this citation?

• Since yoou have access to the original tex files, i would ask the guy who gave them to you for help. Just by looking at the items, i cannot say something useful; it seems strange. – Johannes_B Jul 13 '15 at 9:44
• biblatex might be better to do the job, especially with regards to capitalization. Please note, that the space between J~ and Cigler should be removed. – Johannes_B Jul 13 '15 at 9:45
• @Johannes_B Thank you, I did not notice the space at all. I'll take a look into biblatex. I agree that it seems strange, I don't understand what purpose a second date is supposed to have. – Echan Jul 13 '15 at 9:49
• Are you sure it is a date? If the number in parenthesis would be 1342 i wouldn't say its a date. Maybe it is the total amount of pages? But really, this is guesswork. – Johannes_B Jul 13 '15 at 10:02
• it says "Sitzungsber[icht]", which means report to a conference or something. A conference takes place in one year, the report is published in another. Just a guess. Not really a LaTeX question :) – musicman Jul 13 '15 at 10:07

I'd say that "1997" is the year, "206" is the volume number, and "1996" is the issue number. I'd keep the abbreviated journal name, as I see little point in writing the full form, which would be "{\"O}sterreichische Akademie der Wissenschaften, Mathematisch-Naturwissenschaftliche Klasse, Sitzungsbericht~II".

\RequirePackage{filecontents}
\begin{filecontents}{mybib.bib}
@article{Cig97a,
author  = "J. Cigler",
journal = "{\"O}ster\-reich.\ Akad.\ Wiss.\ Math.-Natur.\ Kl.\ Sitzungsber.~II",
title   = "{Operatormethoden f{\"u}r $q$-{I}dentit{\"a}ten.
IV\@.~Eine Klasse von $q$-Gould-Polynomen}",
year    = 1997,
volume  = 206,
number  = 1996,
pages   = "169-174",
}
@article{Cig97b,
author  = "J. Cigler",
journal = "{\"O}ster\-reich.\ Akad.\ Wiss.\ Math.-Natur.\ Kl.\ Sitzungsber.~II",
title   = "{Operatormethoden f{\"u}r $q$-{I}dentit{\"a}ten.
V\@.~$q$-Catalan B{\"a}ume}",
year    = 1997,
volume  = 206,
number  = 1996,
pages   = "175-182",
}

\end{filecontents}
\documentclass{article}
\usepackage[numbers]{natbib}
\bibliographystyle{plainnat}
\begin{document}
\nocite{*}
\bibliography{mybib}
\end{document}

• I think the volume number is 206 and that's about it if this link is a demonstration of that series. – percusse Jul 13 '15 at 11:54
• @percusse -- That's what I'm guessing too: volume = 206. – Mico Jul 13 '15 at 12:01