%0 Journal Article %A A. A. Davydov %A V. M. Zakalyukin %T Point singularities of a~conditional minimum on a~three-dimensional manifold %J Informatics and Automation %D 1998 %P 113-129 %V 220 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1998_220_a6/ %G ru %F TRSPY_1998_220_a6