00823nam0-22002651i-450-990001126240403321000112624FED01000112624(Aleph)000112624FED0100011262420000920d1977----km-y0itay50------baengContractors and contractor directions theory and applications. a new approach to solving equationsdi AltmanNew York [etc.]1977Lecture Notes in Pure and Applied Mathemati cs,32Altman,Mieczyslaw41442ITUNINARICAUNIMARCBK990001126240403321C-7-(3220446MA1MA1Contractors and contractor directions theory and applications33551UNINAING01