@article{CML_2010__2_2_217_0,
     author = {Unterberger, J\'er\'emie},
     title = {A classification of periodic time-dependent generalized harmonic oscillators using a {Hamiltonian} action of the {Schr\"odinger{\textendash}Virasoro} group},
     journal = {Confluentes Mathematici},
     pages = {217--263},
     publisher = {World Scientific Publishing Co Pte Ltd},
     volume = {2},
     number = {2},
     year = {2010},
     doi = {10.1142/S1793744210000168},
     language = {en},
     url = {http://www.numdam.org/articles/10.1142/S1793744210000168/}
}