Wallin, N. O. A problem for elliptic partial differential operators defined on an arbitrary open set. (English) Zbl 0118.31102 Math. Scand. 9, 185-196 (1961). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:partial differential equations PDFBibTeX XMLCite \textit{N. O. Wallin}, Math. Scand. 9, 185--196 (1961; Zbl 0118.31102) Full Text: DOI EuDML