Coercivity condition for overdetermined boundary values
English version (Springer): Ukrainian Mathematical Journal 37 (1985), no. 5, pp 500-505.
Citation Example: Fel'dman M. A., Samborsky S. N. Coercivity condition for overdetermined boundary values // Ukr. Mat. Zh. - 1985. - 37, № 5. - pp. 609–615.
Full text