1. Bredon G.E.: Introduction to Compact Transformation Groups. Pure Appl. Math., vol. 42. Academic Press, New York (1972)
2. Bredon G.E.: Topology and Geometry—Graduate Text in Math. vol. 139, Springer, Berlin (1993)
3. El Kacimi A., Hector G.: Dcomposition de Hodge basique pour un feuilletage riemannien. Ann. Inst. Fourier 36, 207–227 (1988)
4. El Kacimi A., Sergiescu V., Hector G.: La cohomologie basique d’un feuilletage riemannien est de dimension finie. Math. Z. 188, 593–599 (1985)
5. Greub W., Halperin S., Vanstone R.: Connections, curvature and cohomology—Pure and Appl. Math., vol. II. Academic Press, New York (1972)