TY  - DATA
AU  - Ivar Ekeland
TI  - Convexity Methods in Hamiltonian Mechanics
SN  - 9783642743313
PY  - 1990///
PB  - Springer Berlin Heidelberg
KW  - Mathematics and Statistics
UR  - https://doi.org/10.1007/978-3-642-74331-3
ER  -