1. A Unified Form of Lambert’s Theorem;Blanchard,1968
2. Review of Lambert’s problem;de la Torre Sangrà,2021
3. Leonhard Eulers und Johann Heinrich Lamberts Briefwechsel;Bopp;Abh. Preuß. Akad. Wiss.,1924
4. Mécanique Analytique;Lagrange,2009
5. Theory of the motion of heavenly bodies. By K. F Gauss. Pp. xvii, 326, 40. 24s. 1857; reprinted 1964. (Dover.);Broadbent;Math. Gazette,1964