%0 Journal Article %A Fam Fu %T Attainability of central exponents of a linear Hamiltonian system. I %J Differencialʹnye uravneniâ %D 1980 %P 2012-2022 %V 16 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1980_16_11_a11/ %G ru %F DE_1980_16_11_a11