Bitsadze, A. V. Some classes of partial differential equations. (Nekotorye klassy uravnenij v chastnykh proizvodnykh). (Russian) Zbl 0511.35001 Moskva: “Nauka”. 448. p. R. 2.80 (1981). MSC: 35-01 35Cxx 35A20 35J15 35J45 35L10 35L55 35M99 35G05 35G10 PDF BibTeX XML OpenURL
Kantorovich, L. V.; Krylov, V. I. Methoden zur angenäherten Lösung partieller Differentialgleichungen. (Russian) Zbl 0016.30503 Leningrad, Moskva: Onti-USSR. Obtschetechn. Lit. 528 p. (1936). Reviewer: O. Blumenthal (Aachen) MSC: 65Nxx 65-02 PDF BibTeX XML OpenURL