A.A. Agrachev, B. Bonnard, M. Chyba, I. Kupka, Sub-Riemannian sphere in Martinet flat case

Title: Sub-Riemannian sphere in Martinet flat case
Journal title: ESAIM: Control, Optimisation and Calculus of Variations
Year: 1997
Volume: 2
Pages: 377--448
File: Download