共 9 条
- [1] BURKHILL JC, 1962, THEORY ORDINARY DIFF, P26
- [2] CODDINGTON EA, 1955, THEORY ORDINARY DIFF, P225
- [3] FRIEDRICHS K, 1935, MATH ANN, V112, P1
- [4] TRICOMI FG, 1961, DIFFERENTIAL EQUATIO, P103
- [7] WEYL H, 1952, SELECTA HERMANN WEYL, P405
- [8] WEYL H, 1952, SYMMETRY, P9
- [9] [No title captured]