@article{CMUC_1987__28_2_a8,
     author = {Neumann, Jan},
     title = {An abstract differential equation and the potential bifurcation theorems by {Krasnosel'skij}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {261--276},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1987},
     mrnumber = {904752},
     zbl = {0633.34053},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1987__28_2_a8/}
}