@article{VMUMM_2009_4_a10,
     author = {O. V. Demidov},
     title = {Estimation of instrumental errors for an inertial navigation system using the {Schuler} period},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {56--60},
     year = {2009},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2009_4_a10/}
}