Pierluigi Amodio Felice Iavernaro Donato Trigiante Conservation Properties of Symmetric BVMs Applied to Linear Hamiltonian Problems. 429-438 2002 conf/iccS/2002-3 International Conference on Computational Science (3) http://link.springer.de/link/service/series/0558/bibs/2331/23310429.htm db/conf/iccS/iccS2002-3.html#AmodioIT02