00822nam0-22003011i-450-99000088544040332120001010000088544FED01000088544(Aleph)000088544FED0100008854420001010d--------km-y0itay50------baitay-------001yyPositive Solutions of Operator EquationsNetherlandNoorthoof L.T.D.1964.cm 21pp.381ill.Materie varieKrasnoselʹskij,Mark Aleksandrovič<1920- >ITUNINARICAUNIMARCBK99000088544040332103 M.0,1662672IINTCIINTCPositive Solutions of Operator Equations356166UNINAING01