@article{PORMA_1995__52_2_47382,
     author = {El Mufti, Karim},
     title = {Ind\'ependance des fr\'equences par rapport aux solutions quasi- periodiques de certaines \'equations d'evolution non lin\'eaires.},
     journal = {Portugaliae mathematica},
     pages = {221--226},
     publisher = {mathdoc},
     volume = {52},
     number = {2},
     year = {1995},
     zbl = {0835.35011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1995__52_2_47382/}
}