Existence of a smooth solution in a filtration problem
English version (Springer): Ukrainian Mathematical Journal 41 (1989), no. 9, pp 1027-1032.
Citation Example: Degtyarev S. P., Gusakov V. N. Existence of a smooth solution in a filtration problem // Ukr. Mat. Zh. - 1989. - 41, № 9. - pp. 1192–1198.
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