@article{INTO_2006_110_a9,
     author = {R. Hildebrand},
     title = {On the number of independent control sequences in the symmetric {Fuller} problem with two-dimensional control},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {265--271},
     publisher = {mathdoc},
     volume = {110},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2006_110_a9/}
}