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I had been using bibtex and then biblatex for quite some time. For the newest edition of my book I moved to biber. I happened t notice that firstnames are sometimes generated and sometimes not. Has this been observed by others?

I have tried to make a minimal example but without success. Using the following code, which shows all the commands related to biblatex I have in my preamble I could not get the firstnames to be shown. Even with the stylefile I made for this book (second line) the error did not occur.

I have a dropbox with the latex files for the book available. I can give access to these.

What do you propose?

\documentclass[fontsize=10pt,twoside]{scrbook}
\usepackage{hormonbuch}
\usepackage[%
  style=authoryear%
  ,natbib=true%
  ,sorting=nyt,backend=biber,doi=false,isbn=false,url=false]{biblatex}
\addbibresource{../Literatur/EndokrinologieKundeNourl.bib}

\renewcommand*{\bibpagespunct}{\addcolon}
\DeclareFieldFormat{pages}{#1}

\renewrobustcmd*{\enquote}{}

\renewbibmacro{in:}{%       Herbert Voss auf http://tex.stackexchange.com/questions/10682/suppress-in-biblatex
  \ifentrytype{article}{}{%
  \printtext{\bibstring{in}\intitlepunct}}}

\renewbibmacro*{journal+issuetitle}{%
  \usebibmacro{journal}%
  \setunit*{\addspace}%
  \iffieldundef{series}
    {}
    {\newunit
     \printfield{series}%
     \setunit{\addspace}}%
  \usebibmacro{volume+number+eid}%
%  \setunit{\addspace}%
  \newunit}

\renewbibmacro*{volume+number+eid}{%
  \printfield{volume}%
%  \setunit{\addcolon\space}%
  }%
%
\renewbibmacro*{note+pages}{%
  \printfield{pages}%
  \newunit}
%
\begin{document}

\citet{CRT+88,FDe+85}
\citep{CRT+88,FDe+85}
\cite{CRT+88,FDe+85} 
\printbibliography

\end{document}
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Welcome to TeX.sx! No ned to add greetings in your Q/A, use upvoting of answers instead. –  Peter Jansson Jan 10 '13 at 19:20
    
I came across the same problem; actually, had two authors that suddenly got first names or initials in the citations. In case of one of them, the same author was once showing up in the bib database with middle initial and once without. In a second example there was no such ambiguity, but using the uniquename=false and uniquelist=false options at the end of the option list of biblatex did help. –  Up-and-coming LaTeX Mastah Dec 19 '13 at 11:27
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1 Answer 1

This is almost certainly to do with using the uniquename and uniquelist options which are enabled by default in most bundled styles. These options mean that biber automatically disambiguates names by using initials or full names, depending on which other names are cited. See the biblatex manual which explains this with some comprehensive examples. If you set uniquename=false and uniquelist=false I'll warrant that the "strange" behaviour you see stops.

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Unfortunately adding the two options to the optionlist of biblatex did not change the behaviour. Seems to be something else. I have only two citations with J M Conlon and no other Conlon in the entire reference list as first author. –  user24249 Jan 10 '13 at 19:38
1  
@user24249 We can't really tell what's going on without a minimal example including some sample bib entries. At this point I'd guess it's a combination of the option settings PLK already mentioned and author list formatting in your bib file. –  Audrey Jan 10 '13 at 20:18
    
We'll need a minimal example showing the problem. What do you want to happen? Do you always want to see first names and where? In citations? –  PLK Jan 10 '13 at 22:33
    
I will come back to you when I have found a way to extract an minimal example. As I have shown above I have added all biblatex related information into the ME but did not find the error. –  user24249 Jan 13 '13 at 18:21
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