@article{INTO_1999_64_a0,
     author = {A. A. Agrachev and J.-P. A. Gauthier},
     title = {Sub-Riemannian metrics and isoperimetric problems in the contact case},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {5--48},
     publisher = {mathdoc},
     volume = {64},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_1999_64_a0/}
}