TY - JOUR AU - Dragt, Alex J. TI - A Lie connection between Hamiltonian and Lagrangian optics JO - Discrete mathematics & theoretical computer science PY - 1997 VL - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.238/ DO - 10.46298/dmtcs.238 LA - en ID - DMTCS_1997_1_a7 ER -