共 5 条
[1]
GODBILLON C, 1971, CR ACAD SCI PARIS, P273
[2]
HAEFLIGER A, 1971, SPRINGER LECTURES NO
[3]
Haefliger A., 1970, TOPOLOGY, V9, P183, DOI DOI 10.1016/0040-9383(70)90040-6
[4]
MATHER J, TO BE PUBLISHED
[5]
Moser J, 1966, ANN SCUOLA NORM-SCI, V20, P499