1. Variétés differentiables et analytiques, Fascicule de résultats;Bourbaki,1967
2. Banachian différentiable spaces;Breuer;Math. Ann.,1978
3. On a characterization of flow-invariant sets;Brezis;Comm. Pure Appl. Math.,1970
4. Integrability of singular distributions on Banach manifolds;Chillingworth,1976