@article{SJC_2010_4_1_a7,
     author = {Krastanov, Mikhail},
     title = {High-Order {Control} {Variations} and {Small-Time} {Local} {Controllability}},
     journal = {Serdica Journal of Computing},
     pages = {85--92},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SJC_2010_4_1_a7/}
}