%0 Journal Article %A A. V. Arguchintsev %T A~nonclassical condition for optimality in the problem of the control of boundary conditions of a~semilinear hyperbolic system %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1994 %P 3-11 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1994_1_a0/ %G ru %F IVM_1994_1_a0