De Giorgi, Ennio; Cattabriga, Lamberto Direct proof for existence of analytic solutions of partial differential equations with constant coefficients in the real plane. (Italian) Zbl 0224.35018 Boll. Unione Mat. Ital., IV. Ser. 4, 1015-1027 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 ReviewsCited in 3 Documents MSC: 35E99 Partial differential equations and systems of partial differential equations with constant coefficients PDFBibTeX XMLCite \textit{E. De Giorgi} and \textit{L. Cattabriga}, Boll. Unione Mat. Ital., IV. Ser. 4, 1015--1027 (1971; Zbl 0224.35018)