@article{CMUC_1971__12_4_a10,
     author = {Sova, Miroslav},
     title = {Abstract semilinear equations with small nonlinearities},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {785--805},
     publisher = {mathdoc},
     volume = {12},
     number = {4},
     year = {1971},
     mrnumber = {0291912},
     zbl = {0235.47034},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1971__12_4_a10/}
}