%0 Journal Article %A F. E. Lomovtsev %T Formula of energy parametric derivative for variable linear unbounded operators with variable domains %J Trudy Instituta matematiki %D 2016 %P 75-94 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TIMB_2016_24_1_a9/ %G ru %F TIMB_2016_24_1_a9