Friedrichs, K. O. A theorem of Lichtenstein. (English) Zbl 0029.26603 Duke Math. J. 14, 67-82 (1947). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 10 Documents Keywords:Partial differential equations × Cite Format Result Cite Review PDF Full Text: DOI