%0 Journal Article %A G. A. Kurina %T Linear Hamiltonian systems that are not solved with respect to the derivative %J Differencialʹnye uravneniâ %D 1986 %P 193-198 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_2_a1/ %G ru %F DE_1986_22_2_a1