@article{CMUC_1974_15_3_a3,
     author = {de Figueiredo, Djairo Guedes},
     title = {On the range of nonlinear operators with linear asymptotes which are not invertible},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {415--428},
     year = {1974},
     volume = {15},
     number = {3},
     mrnumber = {0365254},
     zbl = {0296.35038},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1974_15_3_a3/}
}