1. Transversal Mappings and Flows;Abraham,1967
2. Solutions near simple periodic orbits of functional differential equations;Hale;J. Differential Equations,1970
3. Theory of Functional Differential Equations;Hale,1977
4. The neighborhood of a singular point of functional differential equations;Hale;Contrib. Differential Equations,1964
5. Contribution à la théorie des champs génériques;Kupka;Contrib. Differential Equations,1963