共 22 条
[3]
Burns D., 1990, J AM MATH SOC, V3, P809
[6]
Chern S. S., 1974, ACTA MATH, V133, P219
[8]
Folland G. B., 1982, MATH NOTES+, V28
[10]
SOME GLOBAL PROPERTIES OF CONTACT STRUCTURES
[J].
ANNALS OF MATHEMATICS,
1959, 69 (02)
:421-450