%0 Journal Article %A A. A. Kuraev %T The analytic determination of the gradient of the target function when the state equations of the dynamical system are given in implicit form %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1978 %P 1604-1607 %V 18 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1978_18_6_a25/ %G ru %F ZVMMF_1978_18_6_a25