%0 Journal Article %A L. Yu. Blazhennova-Mikulich %T Modeling of instrument errors and external actions in navigational problems %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1990 %P 44-48 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1990_4_a10/ %G ru %F VMUMM_1990_4_a10