共 29 条
- [1] Alexandroff AD, 1939, CR ACAD SCI URSS, V22, P99
- [2] BIANCHI L, 1922, LEZIONI GEOMETRIA DI, V1
- [3] BIANCHI L, 1924, LEZIONI GEOMETRIA DI, V2, P480
- [4] ON THE LOCAL UNIQUENESS OF GEODESICS [J]. AMERICAN JOURNAL OF MATHEMATICS, 1950, 72 (04) : 723 - 730
- [7] Hartman P., 1951, AM J MATH, V73, P949
- [8] HARTMAN P, 1952, AM J MATH, V74, P215
- [9] Hartman P., 1952, AM J MATH, V74, P834, DOI [10.2307/2372229, DOI 10.2307/2372229]
- [10] HARTMAN P, 1953, IN PRESS AM J MATH, V75