@article{AIHPA_1987__47_4_383_0, author = {Bachelot, Alain and Petkov, Vesselin}, title = {Existence des op\'erateurs d'ondes pour les syst\`emes hyperboliques avec un potentiel p\'eriodique en temps}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {383--428}, publisher = {Gauthier-Villars}, volume = {47}, number = {4}, year = {1987}, mrnumber = {933684}, zbl = {0657.35102}, language = {fr}, url = {http://www.numdam.org/item/AIHPA_1987__47_4_383_0/} }