%0 Journal Article %A A. V. Bulinsky %T On the continuity condition for a~group of internal symmetries %J Teoretičeskaâ i matematičeskaâ fizika %D 1974 %P 300-304 %V 19 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1974_19_3_a1/ %G ru %F TMF_1974_19_3_a1