Ich habe mal das Minimalbeispiel entsprechend ergänzt:
\documentclass[british]{scrbook} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage{babel} \usepackage{csquotes} \usepackage[style=authoryear-icomp,sorting=nyt,dashed=false,maxcitenames=2,sortlocale=de_DE,url=true,isbn=true,doi=true,uniquename=init,giveninits]{biblatex} \addbibresource{biblatex-examples.bib} %%% Einfügen von authoryear Block in Literaturverzeichnis \newcounter{mymaxcitenames} \AtBeginDocument{% \setcounter{mymaxcitenames}{\value{maxnames}}% } \renewbibmacro*{begentry}{% \printtext[parens]{% \begingroup \defcounter{maxnames}{\value{mymaxcitenames}}% \printnames{labelname}% \setunit{\nameyeardelim}% \usebibmacro{cite:labeldate+extradate}% \endgroup }% \quad% or \addspace \newline } %%%% \DeclareDelimFormat{finalnamedelim}{\addspace\&\space} \DeclareDelimFormat[bib,biblist]{multinamedelim}{\addsemicolon\space} \DeclareDelimAlias*[bib,biblist]{finalnamedelim}{multinamedelim} \begin{document} \cite{sigfridsson,companion,aksin} \printbibliography \end{document}