@article{CMUC_1977__18_2_a3,
     author = {Itoh, Shigeru},
     title = {Multivalued generalized contractions and fixed point theorems},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {247--258},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1977},
     mrnumber = {0451227},
     zbl = {0359.54038},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1977__18_2_a3/}
}