@article{BUMI_2007_8_10B_3_a15,
     author = {Lesimple, Marc and Valent, Tullio},
     title = {Local {Existence} of {Solutions} for {Perturbation} {Problems} with {Non} {Linear} {Symmetries}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {707--714},
     publisher = {mathdoc},
     volume = {Ser. 8, 10B},
     number = {3},
     year = {2007},
     zbl = {1145.47046},
     mrnumber = {2351539},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2007_8_10B_3_a15/}
}