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Blomstrom, Carol Planar geodesic immersions in pseudo-Euclidean space. (English) Zbl 0572.53042 Math. Ann. 274, 585-598 (1986). MSC: 53C42 53C50 PDF BibTeX XML Cite \textit{C. Blomstrom}, Math. Ann. 274, 585--598 (1986; Zbl 0572.53042) Full Text: DOI EuDML