Finikoff, S. Surfaces ayant points homologues les memes directrices de Wilczynski. (French) Zbl 0014.23004 Bull. Soc. Phys.-Math. Kazan, III. Ser. 7, 44-54 (1936). PDFBibTeX XMLCite \textit{S. Finikoff}, Bull. Soc. Phys.-Math. Kazan, III. Ser. 7, 44--54 (1936; Zbl 0014.23004)
Finikoff, S. Surfaces ayant aux points homologues les mêmes directrices de Wilczynski. (French) JFM 61.1433.03 Bull. Soc. phys.-math. Kazan (3) 7 (1934-1935), 44-54 (1934,1935). Reviewer: Pietsch, H., Dr. (Berlin) PDFBibTeX XMLCite \textit{S. Finikoff}, Bull. Soc. Phys.-Math. Kazan, III. Ser. 7, 44--54 (1934; JFM 61.1433.03)