@article{PORMA_2004__61_4_52155,
     author = {Berkovits, J. and Fabry, C.},
     title = {Semilinear problems with a non-symmetric linear part having an infinite dimensional kernel.},
     journal = {Portugaliae mathematica},
     pages = {439--459},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {2004},
     zbl = {1082.47055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_2004__61_4_52155/}
}