共 7 条
- [1] BECKENBACK EW, 1956, MODERN MATHEMATICS 1, P326
- [2] BIRKHOFF G, 1962, ORDINARY DIFFERENTIA, P112
- [3] Harding C. F., 1964, J APPL MECH, V31, P325
- [4] MORTENSEN RE, UNPUBLISHED PAPER
- [5] PIPES LA, 1956, MODERN MATHEMATICS 1, P326
- [6] ROBINSON AC, 1958, 5817 WADC TECHN REP, P21
- [7] WHITTAKER ET, 1960, TREATISE ANALYTICAL, P8