@article{INTG_1983_14_a0,
     author = {A. A. Agrachev and S. A. Vakhrameev and R. V. Gamkrelidze},
     title = {Differential geometric and group theoretic methods in optimal control theory},
     journal = {Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara},
     pages = {3--56},
     publisher = {mathdoc},
     volume = {14},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTG_1983_14_a0/}
}