Smoothness of weak solutions of elliptic systems in the sense of Douglis-Nirenberg
English version (Springer): Ukrainian Mathematical Journal 43 (1991), no. 10, pp 1279-1282.
Citation Example: Mekh I. Ya. Smoothness of weak solutions of elliptic systems in the sense of Douglis-Nirenberg // Ukr. Mat. Zh. - 1991. - 43, № 10. - pp. 1379–1383.
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