\begin{thebibliography}{1}

\bibitem{hale201307}
Dave Hale.
\newblock Personal communication, 2013.

\bibitem{HansenTarantola:2006}
Thomas~Mejer Hansen, Andre Journel, Albert Tarantola, and Klaus Mosegaard.
\newblock Linear inverse gaussian theory and geostatistics.
\newblock {\em Geophysics}, pages 101--111, 2006.

\bibitem{isaaks:intro}
Edward~H. Isaaks and Mohan~R. Srivastava.
\newblock {\em An Introduction to Applied Geostatistics}.
\newblock Oxford University Press, USA, January 1990.

\bibitem{Tarantola:2004}
Albert Tarantola.
\newblock {\em Inverse Problem Theory and Methods for Model Parameter
  Estimation}.
\newblock Society for Industrial and Applied Mathematics, Philadelphia, PA,
  USA, 2004.

\bibitem{wackernagel}
H.~Wackernagel.
\newblock {\em Multivariate geostatistics: an introduction with applications}.
\newblock Springer-Verlag, 2nd edition, 2003.

\end{thebibliography}
