Boundary value problems with a parameter in Lp for systems elliptic in the sense of Douglis-Nirenberg
English version (Springer): Ukrainian Mathematical Journal 19 (1967), no. 1, pp 100-104.
Citation Example: Roitberg Ya. A., Sheftel' Z. G. Boundary value problems with a parameter in Lp for systems elliptic in the sense of Douglis-Nirenberg // Ukr. Mat. Zh. - 1967. - 19, № 1. - pp. 115– 120.
Full text