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MATHEMATICS
The structure of certain complete surfaces of non-positive curvature
A. L. Verner A. I. Hertsen Leningrad Pedagogical Institute
Citation:
A. L. Verner, “The structure of certain complete surfaces of non-positive curvature”, Dokl. Akad. Nauk SSSR, 180:2 (1968), 269–272
Linking options:
https://www.mathnet.ru/eng/dan33839 https://www.mathnet.ru/eng/dan/v180/i2/p269
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