@article{01157669, title = {The minimum principle from a Hamiltonian point of view.}, journal = {Documenta Mathematica}, year = {1998}, pages = {1-14}, zbl = {0939.32021}, language = {en}, url = {http://dml.mathdoc.fr/item/01157669} }
Heinzner, Peter. The minimum principle from a Hamiltonian point of view.. Documenta Mathematica, (1998), pp. 1-14. http://gdmltest.u-ga.fr/item/01157669/