Ghys, Etienne L’invariant de Godbillon-Vey. (The Godbillon-Vey invariant). (French) Zbl 0707.57015 Sémin. Bourbaki, Vol. 1988/89, 41e année, Exp. No. 706, Astérisque 177-178, 155-181 (1989). Reviewer: T.Mizutani MSC: 57R30 57R32 PDF BibTeX XML Full Text: Numdam EuDML OpenURL
Mitsumatsu, Yoshihiko A relation between the topological invariance of the Godbillon-Vey invariant and the Differentiability of Anosov foliations. (English) Zbl 0653.57018 Foliations, Proc. Symp., Tokyo 1983, Adv. Stud. Pure Math. 5, 159-167 (1985). MSC: 57R30 37D99 PDF BibTeX XML OpenURL