%0 Journal Article %A A. D. Myshkis %A А. А. Sharshanov %T The construction of the set of initial points of the integral lines contained in a half-plane for a linear Hamiltonian system of two equations with periodic coefficients %J Differencialʹnye uravneniâ %D 1968 %P 547-550 %V 4 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_3_a16/ %G ru %F DE_1968_4_3_a16