On lightlike geometry: isometric actions, and rigidity aspects

Esmaa Bekkara; Charles Frances; Abdelghani Zeghib

Comptes Rendus. Mathématique, Volume 343 (2006) no. 5 p. 317-321

The conformal boundary of Margulis space–times

Charles Frances

Comptes Rendus. Mathématique, Volume 336 (2003) no. 9 p. 751-756