General relativistic celestial mechanics of binary systems. I. The post-newtonian motion T. Damour, N. Deruelle (1985) Annales de l'I.H.P. Physique théorique
General relativistic celestial mechanics of binary systems. II. The post-newtonian timing formula Thibault Damour, Nathalie Deruelle (1986) Annales de l'I.H.P. Physique théorique