%% 
%%  Ein Beispiel der DANTE-Edition
%%  Bibliografie mit LaTeX
%%  2. Auflage
%%  Beispiel 04-10-12 auf Seite 197.
%%  Copyright (C) 2016 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% ==command biber ++FILE++== 
% Show page(s) 1
%% 
%% 
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\usepackage[T1]{fontenc}
\usepackage[ngerman]{babel}
\AtBeginDocument{\parindent=0pt}
\usepackage[utf8]{inputenc}
%StartShownPreambleCommands
\usepackage[minnames=3,maxnames=3]{biblatex}
\DeclareNameFormat{sortname+1stcaps}{%
 \nameparts{#1}%
 \ifnum\value{listcount}=1\relax%                <-der erste Autor?
   \renewcommand*\mkbibnamefamily{\textsc{\namepartfamily}}%        <-neu
   \usebibmacro{name:family-given}{\namepartfamily}{\namepartgiven}{\namepartprefix}{\namepartsuffix}%
   \ifblank{\namepartgiven\namepartprefix}{}{\usebibmacro{name:revsdelim}}%
 \else
   \let\mkbibnamefamily\namepartfamily%          <-neu
   \usebibmacro{name:given-family}{\namepartfamily}{\namepartgiven}{\namepartprefix}{\namepartsuffix}%
 \fi%
 \usebibmacro{name:andothers}}
\DeclareNameAlias{author}{sortname+1stcaps}
\DeclareNameAlias{editor}{sortname+1stcaps}
\addbibresource{examples.bib}
%StopShownPreambleCommands
\begin{document}
foo~\cite{kastenholz} und~\cite{murray}. Der Eintrag von~\cite{kastenholz} \ldots
\printbibliography
\end{document}
