Publications Mathématiques de l'IHÉS, Tome 51 (1980)

S u z (2^{m})

S p_{4} (2^{n})

Chastkofsky, Leonard ; Feit, Walter

p. 9-35

Lifting smooth homotopies of orbit spaces

Schwarz, Gerald W.

p. 37-135

Katok, Anatole

p. 137-173