TY - JOUR TI - Existence, multiplicity, and regularity for sub-Riemannian geodesics by variational methods PY - 2002 AU - Giambó, Roberto AU - Giannoni, Fábio AU - Piccione, Paolo T2 - Siam Journal on control and Optimization SN - 0363-0129 DO - 10.1137/S0363012900367242 UR - https://doi.org/10.1137/S0363012900367242 PP - Philadelphia PB - SIAM VL - 40 IS - 6 SP - 1840-1857 ER -