%0 Journal Article %A S. V. Bolotin %A V. V. Kozlov %T Calculus of variations in the large, existence of trajectories in a~domain with boundary, and Whitney's inverted pendulum problem %J Izvestiya. Mathematics %D 2015 %P 894-901 %V 79 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM2_2015_79_5_a1/ %G en %F IM2_2015_79_5_a1