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- [4] SCHAUDER FIXED-POINT THEOREM FOR NONEXPANSIVE MAPPINGS AMERICAN MATHEMATICAL MONTHLY, 1977, 84 (05): : 363 - 364
- [10] FIXED-POINT THEOREM FOR FAMILIES OF NONEXPANSIVE MAPPINGS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1973, 20 (05): : A489 - A489