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@article{JRAM_1985__363_152781, author = {Renate Schaaf}, title = {A class of {Hamiltonian} systems with increasing periods.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {96--109}, publisher = {mathdoc}, volume = {363}, year = {1985}, zbl = {0565.34037}, url = {http://geodesic.mathdoc.fr/item/JRAM_1985__363_152781/} }
Renate Schaaf. A class of Hamiltonian systems with increasing periods.. Journal für die reine und angewandte Mathematik, Tome 363 (1985), pp. 96-109. http://geodesic.mathdoc.fr/item/JRAM_1985__363_152781/