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%%  Ein Beispiel der DANTE-Edition
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%%  2. Auflage
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%%  Beispiel 11-07-2 auf Seite 592.
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%%  Copyright (C) 2016 Herbert Voss
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%%  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.
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%%  See http://www.latex-project.org/lppl.txt for details.
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%% ==command biber --output-safechars ++FILE++== 
% Show page(s) 1
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\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\usepackage[ngerman]{babel}
\usepackage[paper=a5,pagesize,DIV=15]{typearea}
%StartShownPreambleCommands
\usepackage[T1]{fontenc}%%% pdflatex
\usepackage{libertine}
\usepackage[scaled=0.85]{beramono}
\usepackage[utf8]{inputenc}
\usepackage{filecontents}
\begin{filecontents*}{utf8char.bib}
@online{SIOC,
 author = {Diego Berrueta and Dan Brickley and Stefan Decker and Sergio Fern{\'a}ndez
           and Christoph G{\"o}rn and Andreas Harth and Tom Heath and Kingsley Idehen
           and Kjetil Kjernsmo and Alistair Miles and Alexandre Passant
           and Axel Polleres and Luis Polo},
 editor = {Uldis Boj{\=a}rs and John Br{\'e}slin},
 title  = {SIOC Core Ontology Specification},
 url    = {http://rdfs.org/sioc/spec/},
 urldate= {2015-11-21},
 year   = {2010}}
\end{filecontents*}
\usepackage[style=alphabetic]{biblatex}
\addbibresource{utf8char.bib}
%StopShownPreambleCommands
\begin{document}
abc~\cite{SIOC}
\printbibliography    % run "biber --output-safechars <Datei>"
\end{document}