(add-to-list 'org-latex-classes '("Springer"
               "\documentclass[natbib]{svjour3}
               ("\section{%s}" . "\section*{%s}")
               ("\subsection{%s}" . "\subsection*{%s}")
               ("\subsubsection{%s}" . "\subsubsection*{%s}")
               ("\paragraph{%s}" . "\paragraph*{%s}")
               ("\subparagraph{%s}" . "\subparagraph*{%s}")))

#+LATEX_CLASS: Springer