@article{AIHPA_1997__67_4_411_0,
     author = {Nenciu, G.},
     title = {Adiabatic theory : stability of systems with increasing gaps},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {411--424},
     publisher = {Gauthier-Villars},
     volume = {67},
     number = {4},
     year = {1997},
     mrnumber = {1632240},
     zbl = {0884.34088},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1997__67_4_411_0/}
}