\begin{thebibliography}{}

\bibitem[\protect\citeauthoryear{{Earth Observatory
  (NASA)}}{2007}]{figure:NASA}
{Earth Observatory (NASA)}.
\newblock {On The Shoulders of Giants, Milutin Milankovitch (1879--1958)},
  2007.

\bibitem[\protect\citeauthoryear{{ICI, Bucharest}}{1999}]{figure:ici}
{ICI, Bucharest}.
\newblock {Dambovicioara Cave}, December 1999.

\bibitem[\protect\citeauthoryear{{Institute of Particle
  Physics}}{2002}]{figure:ethzhpk}
{Institute of Particle Physics}.
\newblock {Ion Beam Physics}, October 2002.

\bibitem[\protect\citeauthoryear{Schüssler}{2001}]{solar:schuessler2001}
Manfred Schüssler.
\newblock {Das Magnetfeld der Sonne und die globale Erwärmung: Steuert die
  Sonne das Erdklima?}, December 2001.

\bibitem[\protect\citeauthoryear{Slemko}{2003}]{figure:slemko}
Sarah Slemko.
\newblock {Fragen}, 2003.

\bibitem[\protect\citeauthoryear{Wikipedia}{2005}]{figure:tikal}
Wikipedia.
\newblock {Temple in Tikal}, February 2005.

\end{thebibliography}
