by Al'khovskii, . A., Berezhnaya, I. V., Grishin, K. V., Il'inskii, A. S., Kondrat'ev, A. G.
Published in Computational mathematics and modeling (1996)

by Il'inskii, A. S., Al'khovskii, . A., Danilova, A. G.
Published in Radiophysics and quantum electronics (01.10.1973)

by Al'khovskii, E. A., Berezhnaya, I. V., Il'inskii, A. S., Kondrat'ev, A. G.
Published in Computational mathematics and modeling (01.04.1992)