@article{MZ_1970__115_171349,
     author = {George H., Jr. Pimbley},
     title = {On {Eigenfunction} {Branches} of {Nonlinear} {Operators,} and their {Bifurcations.}},
     journal = {Mathematische Zeitschrift},
     pages = {231--234},
     publisher = {mathdoc},
     volume = {115},
     year = {1970},
     zbl = {0207.42003},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__115_171349/}
}