by Brusilovskaia, G.A., Ershov, L.V.
Published in Journal of applied mathematics and mechanics (01.01.1974)

by Brusilovskaia, G.A., Ershov, L.V.
Published in Journal of applied mathematics and mechanics (01.01.1973)

by Ershov, L.V.
Published in Journal of applied mathematics and mechanics (1962)

by Brusilovskaia, G.A., Ershov, L.V.
Published in Journal of applied mathematics and mechanics (1974)

by Brusilovskaia, G.A., Ershov, L.V.
Published in Journal of applied mathematics and mechanics (1973)

by Ershov, L.V., Ivlev, D.D.
Published in Journal of applied mathematics and mechanics (1967)

by Germanovich, L.N., Ershov, L.V., Kill, I.D
Published in Journal of applied mathematics and mechanics (1985)

by Ershov, L.V., Ivlev, D.D.
Published in Journal of applied mathematics and mechanics (01.01.1967)

by BELYAKOV N.A, ERSHOV L.V, PUZYREV I.V
Year of Publication 30.11.1953