@article{PIM2_1987__41(55)_118006,
     author = {\'Ciri\'c, Ljubomir B.},
     title = {On a question of {Ivanov} relating to nonlinear quasicontractive mappings.},
     journal = {Publications de l 'Institut Math\'ematique. Nouvelle S\'erie},
     pages = {149},
     publisher = {mathdoc},
     volume = {41(55)},
     year = {1987},
     zbl = {0631.54021},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PIM2_1987__41(55)_118006/}
}