Wimmel, H. K. Theory, Max Planck Institute for Plasma Physics, Max Planck Society;
IPP_6_251.1.pdf (Any fulltext), 11MB
Wimmel, H. K.(1985). Liouville's Theorem for Time-Dependent, Non-Standard and Standard Lagrangians. (IPP 6/251). Garching (DE): Max-Planck-Institut für Plasmaphysik.