共 7 条
[1]
LASALLE JP, 1967, DIFF EQUAT, P277
[2]
LEVIN JJ, 1965, ARCH RATIONAL MECH A, V6, P65
[4]
ONUCHIC N, 1969, ACTA MEXICANA CI TEC, V3, P6
[5]
STRAUSS A, 1967, MATH SYST THEORY, V1, P175
[6]
Yoshizawa T, 1963, CONTRIBUTIONS DIFFER, V1, P371
[7]
Yoshizawa T., 1966, J MATH SOC JAPAN