1. “Etude théorique des trajectoires optimales dans un champ de gravitation. Application au cas d'un centre d'attraction unique,”;Contensou;Astronaut. Acta,1962
2. Relaxed variational problems;Warga;J. Math. Anal. Appl.,1962
3. Necessary conditions for minimum in relaxed variational problems;Warga;J. Math. Anal. Appl.,1962
4. Extremization of linear integrals by Green's theorem;Miele,1962
5. The time optimal control problem;LaSalle,1960