Hasegawa, Masaru; Honda, Atsufumi; Naokawa, Kosuke; Saji, Kentaro; Umehara, Masaaki; Yamada, Kotaro Intrinsic properties of surfaces with singularities. (English) Zbl 1321.57039 Int. J. Math. 26, No. 4, Article ID 1540008, 34 p. (2015). Reviewer: Dorin Andrica (Riyadh) MSC: 57R45 53A05 PDFBibTeX XMLCite \textit{M. Hasegawa} et al., Int. J. Math. 26, No. 4, Article ID 1540008, 34 p. (2015; Zbl 1321.57039) Full Text: DOI arXiv
Noda, Takahiro; Shibuya, Kazuhiro On implicit second-order PDE of a scalar function on a plane via differential systems. (English) Zbl 1227.58001 Int. J. Math. 22, No. 7, 907-924 (2011). MSC: 58A10 58A30 35R01 PDFBibTeX XMLCite \textit{T. Noda} and \textit{K. Shibuya}, Int. J. Math. 22, No. 7, 907--924 (2011; Zbl 1227.58001) Full Text: DOI