By Thibault Damour
Conférence donnée devant L'Association des Amis de l'IHÉS à l'IHÉS le 10 novembre 2016.
By Eleni-Alexandra Kontou
By Abhay Ashtekar
By Robert Wald
By Sebastiano Bernuzzi
By Stephen Coombes , Peter Liddle
By Aaron Brown
By Victor Kleptsyn
By Jean Feydy
By François-Xavier Vialard