%0 Journal Article %A V. A. Gustomesov %T A study of the relay sampled-data systems by the method of point mappings %J Differencialʹnye uravneniâ %D 1975 %P 645-658 %V 11 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_4_a5/ %G ru %F DE_1975_11_4_a5