00775nam0-22002651i-450-990001181380403321000118138FED01000118138(Aleph)000118138FED0100011813820000920d1983----km-y0itay50------baengDifference methods and their extrapolationsby MARCHUK G.I.New York [etc.]Springer-Verlag1983.Applications of mathematics19Marcuk,Gurij Ivanovic49044Shaidurov,V.V.ITUNINARICAUNIMARCBK990001181380403321C-39-(195361MA1MA1Difference methods and their extrapolations342233UNINAING01