On the polarizers of compact semi-simple Lie groups. Applications C. Duval — 1981 Annales de l'I.H.P. Physique théorique
Space of Second Order Linear Differential Operators As a Module Over the Lie Algebra of Vector Fields C. Duval; V. Yu. Ovsienko — 1995 Recherche Coopérative sur Programme n°25
Dirac field on newtonian space-time H. P. Künzle; C. Duval — 1984 Annales de l'I.H.P. Physique théorique