Hoelder, Ernst [Piskorek, A.] The scientific activity of Leon Lichtenstein (on the occasion of the 100th anniversary of his birthday). Translated from the German by Adam Piskorek. (Polish) Zbl 0523.01024 Rocz. Pol. Tow. Mat., Ser. II, Wiadom. Mat. 24, 187-202 (1982). MSC: 01A70 76-03 45-03 34-03 PDFBibTeX XMLCite \textit{E. Hoelder}, Rocz. Pol. Tow. Mat., Ser. II, Wiad. Mat. 24, 187--202 (1982; Zbl 0523.01024)
Maruhn, K. Über einige Klassen nichtlinearer Randwertaufgaben der Potentialtheorie. (German) Zbl 0029.21304 Math. Z. 51, 36-60 (1947). Reviewer: Ernst Hölder (Leipzig) MSC: 31A25 PDFBibTeX XMLCite \textit{K. Maruhn}, Math. Z. 51, 36--60 (1947; Zbl 0029.21304) Full Text: DOI EuDML