%0 Journal Article %A E. N. Ogorodnikov %T Some characteristic problems for loaded systems of differential equations and their relationship with non-local boundary value problems %J Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences %D 2003 %P 22-28 %V 19 %N 19 %U http://geodesic.mathdoc.fr/item/VSGTU_2003_19_19_a4/ %G ru %F VSGTU_2003_19_19_a4