%0 Journal Article %A N. Vavilov %A Z. Zhang %T Commutators of relative and unrelative elementary groups, revisited %J Zapiski Nauchnykh Seminarov POMI %D 2019 %P 58-71 %V 485 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2019_485_a2/ %G en %F ZNSL_2019_485_a2