Vragov, V. N. Zur Theorie der Randwertprobleme für Gleichungen gemischten Typs im Raum. (Russian) Zbl 0358.35053 Differ. Uravn. 13, 1098-1105 (1977). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 ReviewsCited in 5 Documents MSC: 35M99 Partial differential equations of mixed type and mixed-type systems of partial differential equations 35D05 Existence of generalized solutions of PDE (MSC2000) 35J25 Boundary value problems for second-order elliptic equations 35J10 Schrödinger operator, Schrödinger equation 35B45 A priori estimates in context of PDEs 35K20 Initial-boundary value problems for second-order parabolic equations 35L20 Initial-boundary value problems for second-order hyperbolic equations PDFBibTeX XMLCite \textit{V. N. Vragov}, Differ. Uravn. 13, 1098--1105 (1977; Zbl 0358.35053)