The spectral matrices of a second order expression in the half-plane
English version (Springer): Ukrainian Mathematical Journal 22 (1970), no. 3, pp 296-302.
Citation Example: Androshchuk A. A. The spectral matrices of a second order expression in the half-plane // Ukr. Mat. Zh. - 1970. - 22, № 3. - pp. 343–355.
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