Theorems on isomorphisms for elliptic systems with boundary conditions which are not normal
English version (Springer): Ukrainian Mathematical Journal 25 (1973), no. 3, pp 303-307.
Citation Example: Kovalenko I. A. Theorems on isomorphisms for elliptic systems with boundary conditions which are not normal // Ukr. Mat. Zh. - 1973. - 25, № 3. - pp. 373—379.
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