Generalized differentiation and bi-Lipschitz nonembedding in L1

Jeff Cheeger; Bruce Kleiner

Comptes Rendus. Mathématique, Volume 343 (2006) no. 5 p. 297-301

L_p-bounds on curvature, elliptic estimates and rectifiability of singular sets

Jeff Cheeger

Comptes Rendus. Mathématique, Volume 334 (2002) no. 3 p. 195-198