Rosca, Radu Les variétés pseudo-isotropes dans un espace-temps de Minkowski. (French) Zbl 0237.53050 C. R. Acad. Sci., Paris, Sér. A 270, 1071-1073 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents MSC: 53C40 Global submanifolds 53C50 Global differential geometry of Lorentz manifolds, manifolds with indefinite metrics PDFBibTeX XMLCite \textit{R. Rosca}, C. R. Acad. Sci., Paris, Sér. A 270, 1071--1073 (1970; Zbl 0237.53050)