%0 Journal Article %A M. I. Zelikin %T Hessian of the solution of the Hamilton–Jacobi equation in the theory of extremal problems %J Sbornik. Mathematics %D 2004 %P 819-831 %V 195 %N 6 %U http://geodesic.mathdoc.fr/item/SM_2004_195_6_a2/ %G en %F SM_2004_195_6_a2