%0 Journal Article %A S. F. Morozov %T The differential properties of the generalized solutions of two-dimensional variational problems %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1970 %P 87-96 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1970_11_a9/ %G ru %F IVM_1970_11_a9