@article{10_21136_CMJ_1974_101277,
     author = {Riedl, H. M. and Webb, Glenn F.},
     title = {Relative boundedness conditions and the perturbation of nonlinear operators},
     journal = {Czechoslovak Mathematical Journal},
     pages = {584--597},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {1974},
     doi = {10.21136/CMJ.1974.101277},
     mrnumber = {0358480},
     zbl = {0349.47049},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101277/}
}