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2. A method of reducing matrices to the Jordan normal form (Transl.) USSR Comput;BEKISHEV G.A;Math. Math Phys.,1965
3. Algorithm 358: singular value decomposition of a complex matrix [F1, 4, 5]
4. re~enii lineinyh algebrai6eskfla sistem s pryamougolnymi matrlcaml;FADDEEV D.K.;Tr. Mat Inst. V.A Steklova,1968