CARTAN, Elie. Oeuvres - Collected works. 1979.

Edited by R. Remmert and J.-P. Serre. Text in french.
Élie Cartan (1869 – 1951) was a French mathematician who made fundamental contributions to Lie group theory and its geometric applications.

He also made significant contributions to mathematical physics, differential geometry, differential equations, group theory, and quantum mechanics.

He is widely regarded as one of the greatest mathematicians of the 20th century.