“…The decomposition of transvections technique proposed by Stepanov and Vavilov in [3] is successfully used to prove the normality of the elementary subgroups in Chevalley groups and the structure theorem on subgroups normalized by an elementary subgroup, to estimate the width of Chevalley groups in various generators, to describe automorphisms, and so on. Various versions of this method were proposed in [8,9,10,11,6].…”