A.A. Agrachev, J.-P. Gauthier, On the subanalyticity of Carnot-Caratheodory distances

Title: On the subanalyticity of Carnot-Caratheodory distances
Authors: A.A. Agrachev, J.-P. Gauthier
Journal title: Ann. Inst. H. Poincaré Anal. Non Linéaire
Year: 2001
Issue: 3
Volume: 18
Pages: 359–382