共 10 条
[1]
Bellman R., 1964, PERTURBATION TECHNIQ
[2]
Courant R., 1961, DIFFERENTIAL INTEGRA, VII
[3]
Ford L. R., 1955, DIFFERENTIAL EQUATIO
[4]
Ince E. L., 1956, ORDINARY DIFFERENTIA
[5]
Murphy G. M., 1960, ORDINARY DIFFERENTIA
[6]
Roberts S.M., 1972, 2 POINT BOUNDARY VAL
[10]
SCOTT MR, 1973, INVARIANT IMBEDDING