\documentclass{scrartcl}

\usepackage{amsthm,amsmath,amssymb}

\author{B. Jüttler\thanks{Johannes Kepler University Linz, Austria} \and M.
  Peternell \thanks{Vienna University of Technology, Austria} \and H-.P.
  Schröcker\thanks{University of Innsbruck, Austria}}

\title{Title of Your Talk}

\begin{document}

\maketitle

Some text of the abstract. Some text of the abstract. Some text of the abstract.
Some text of the abstract. Some text of the abstract. Some text of the abstract.
Some text of the abstract. Some text of the abstract. Some text of the abstract.
Some text of the abstract. Some text of the abstract. Some text of the abstract.
Some text of the abstract. Some text of the abstract. Some text of the abstract
\cite{hoschek98a,hoschek93,hoschek98b}. Some text of the abstract. Some text of
the abstract.

\begin{thebibliography}{3}
\bibitem{hoschek98a}
Josef Hoschek.
\newblock Approximation of surfaces of revolution by developable surfaces.
\newblock \emph{Comput. Aided Geom. Design}, 30\penalty0 (10):\penalty0
  757--763, 1998.

\bibitem{hoschek93}
Josef Hoschek and Dieter Lasser.
\newblock \emph{Fundamentals of Computer Aided Geometric Design}.
\newblock A. K. Peters, Wellesley, MA, 1993.

\bibitem{hoschek98b}
Josef Hoschek and Ulrich Schwanecke.
\newblock Interpolation and approximation with developable surfaces.
\newblock In Robert Cripps, editor, \emph{The Mathematics of Surfaces VIII},
  pages 213--231. Information Geometers, 1998.
\end{thebibliography}

\end{document} 