@article{VMUMM_2000_4_a7,
     author = {Yu. V. Bolotin and S. N. Morgunova},
     title = {On the observability of mechanical systems based on angular measurements},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {34--38},
     publisher = {mathdoc},
     number = {4},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2000_4_a7/}
}