%0 Journal Article %A Yu. V. Bolotin %A S. N. Morgunova %T Observability with bearing-only observations and smoothness of attainable set %J Fundamentalʹnaâ i prikladnaâ matematika %D 2005 %P 119-130 %V 11 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2005_11_8_a5/ %G ru %F FPM_2005_11_8_a5