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@article{MV_1972_24_1_a37, author = {Lj. B. \'Ciri\'c}, title = {Fixed points for generalized multi-valued contractions}, journal = {Matemati\v{c}ki vesnik}, pages = {265 }, publisher = {mathdoc}, volume = {24}, number = {1}, year = {1972}, url = {http://geodesic.mathdoc.fr/item/MV_1972_24_1_a37/} }
Lj. B. Ćirić. Fixed points for generalized multi-valued contractions. Matematički vesnik, Tome 24 (1972) no. 1, p. 265 . http://geodesic.mathdoc.fr/item/MV_1972_24_1_a37/