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- [45] FIXED-POINT THEOREMS FOR QUASI-NONEXPANSIVE MAPPINGS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1973, 20 (06): : A575 - A575
- [48] FIXED-POINT THEORIES FOR CONDENSING MAPS BULLETIN DE LA SOCIETE MATHEMATIQUE DE FRANCE, 1976, (46): : 91 - 120