@article{SJL_1973-1974___3_1_0, author = {Leray, Jean}, title = {Solutions asymptotiques et groupe symplectique}, journal = {S\'eminaire Jean Leray}, pages = {1--25}, publisher = {Coll\`ege de France}, number = {3}, year = {1973-1974}, language = {fr}, url = {http://archive.numdam.org/item/SJL_1973-1974___3_1_0/} }