Biblatex: Distinguish citestyle of reference categories (my vs. others' publications)

Question

I'm building on this template using Biblatex/biber for managing my references and for citation. To better indicate which references I co-authored, I want them to use a slightly different cite style than references to others' work. For example, the generated text should look like this:

In my previous work [My1] and [My14], I investigated impact of factors A and B. Factor C was recently evaluated by Others et al. [1] and Someone and Else [3].

So basically, my citations should have a custom prefix, here "My", and separate numbering from the others citations (which have another prefix, here nothing "").

All references should be printed in the bibliography at the end of the document. For better overview, the two different categories may be listed separately, i.e., first my publications with keys [My1]-[My23] and then others' publications with keys [1]-[211].

Is that possible somehow easily? I think I'd have to use bibliography categories somehow; but I don't know exactly how.

Answer 1

I guess the most user friendly solution here is one where biblatex can automatically tell which works are yours and which are not. This can be done with the code from Filter bibliography by author?. (If you don't mind adding entries to categories manually, things are of course a bit simpler.)

Then it is just a matter of starting a new refcontext with labelprefix for your works and asking biblatex to reset the numbering for the other works. Throw in defernumbers because we have split numeric bibliographies and you are good to go.

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[backend=biber,style=numeric, defernumbers]{biblatex}
\usepackage{hyperref}

\addbibresource{biblatex-examples.bib}

\makeatletter
\def\fnblx@bibfile@name{\jobname -fnblx.bib}
\newwrite\fnblx@bibfile
\immediate\openout\fnblx@bibfile=\fnblx@bibfile@name

\immediate\write\fnblx@bibfile{%
  @comment{Auto-generated file}\blx@nl}

\newcounter{fnblx@name}
\setcounter{fnblx@name}{0}

\newcommand*{\fnblx@writenametobib}[1]{%
  \stepcounter{fnblx@name}%
  \edef\fnblx@tmp@nocite{%
    \noexpand\AfterPreamble{%
      \noexpand\setbox0\noexpand\vbox{%
        \noexpand\fnblx@getmethehash{fnblx@name@\the\value{fnblx@name}}}}%
  }%
  \fnblx@tmp@nocite
  \immediate\write\fnblx@bibfile{%
    @misc{fnblx@name@\the\value{fnblx@name}, author = {\unexpanded{#1}}, %
          options = {dataonly=true},}%
  }%
}

\AtEndDocument{%
  \closeout\fnblx@bibfile}

\addbibresource{\fnblx@bibfile@name}

\newcommand*{\fnblx@namehashes}{}
\DeclareNameFormat{fnblx@hashextract}{%
  \xifinlist{\thefield{hash}}{\fnblx@namehashes}
    {}
    {\listxadd{\fnblx@namehashes}{\thefield{hash}}}}

\DeclareCiteCommand{\fnblx@getmethehash}
  {}
  {\printnames[fnblx@hashextract][1-999]{author}}
  {}
  {}

\newtoggle{fnblx@tempa}
\DeclareIndexNameFormat{fnblx@checkfilternames}{%
  \xifinlist{\thefield{hash}}{\fnblx@namehashes}
    {\global\toggletrue{fnblx@tempa}}
    {}}

\newcommand*{\addbfilternames}{\forcsvlist\fnblx@writenametobib}
\newcommand*{\resetfilternames}{\def\fnblx@namehashes{}}

\defbibcheck{filternames}{%
  \global\togglefalse{fnblx@tempa}
  \indexnames[fnblx@checkfilternames][1-999]{labelname}%
  \iftoggle{fnblx@tempa}
    {}
    {\skipentry}}
    
\defbibcheck{notfilternames}{%
  \global\togglefalse{fnblx@tempa}
  \indexnames[fnblx@checkfilternames][1-999]{labelname}%
  \iftoggle{fnblx@tempa}
    {\skipentry}
    {}}
\makeatother

\addbfilternames{Emma Sigfridsson}

\begin{document}
Lorem \autocite{sigfridsson}
ipsum \autocite{worman}
dolor \autocite{geer}
sit \autocite{knuth:ct:a,knuth:ct:b}

\begin{refcontext}[labelprefix=My]
\printbibliography[check=filternames, title={Works by Emma Sigfridsson}]
\end{refcontext}
\printbibliography[resetnumbers, check=notfilternames, title={Works not by Emma Sigfridsson}]
\end{document}

---

For comparison here is the same document with categories where you have to specify manually which entries are yours

\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[backend=biber,style=numeric, defernumbers]{biblatex}
\usepackage{hyperref}

\addbibresource{biblatex-examples.bib}

\DeclareBibliographyCategory{mywork}
\addtocategory{mywork}{sigfridsson}

\begin{document}
Lorem \autocite{sigfridsson}
ipsum \autocite{worman}
dolor \autocite{geer}
sit \autocite{knuth:ct:a,knuth:ct:b}

\begin{refcontext}[labelprefix=My]
\printbibliography[category=mywork, title={Works by Emma Sigfridsson}]
\end{refcontext}
\printbibliography[resetnumbers, notcategory=mywork, title={Works not by Emma Sigfridsson}]
\end{document}