@article{AIHPA_1989__50_3_229_0, author = {Huang, Min-Jei}, title = {On stability for time-periodic perturbations of harmonic oscillators}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {229--238}, publisher = {Gauthier-Villars}, volume = {50}, number = {3}, year = {1989}, zbl = {0693.34063}, mrnumber = {1017964}, language = {en}, url = {http://archive.numdam.org/item/AIHPA_1989__50_3_229_0/} }