Mark Sofroniou Giulia Spaletta Symplectic Methods for Separable Hamiltonian Systems. 506-515 2002 conf/iccS/2002-3 International Conference on Computational Science (3) http://link.springer.de/link/service/series/0558/bibs/2331/23310506.htm db/conf/iccS/iccS2002-3.html#SofroniouS02a