@article{AIHPC_1999__16_1_15_0,
     author = {Wolansky, G.},
     title = {On nonlinear stability of polytropic galaxies},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {15--48},
     publisher = {Gauthier-Villars},
     volume = {16},
     number = {1},
     year = {1999},
     mrnumber = {1668556},
     zbl = {0927.70019},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1999__16_1_15_0/}
}