%0 Journal Article %A O. Macedońska %T What do the Engel laws and positive laws have in common? %J Fundamentalʹnaâ i prikladnaâ matematika %D 2008 %P 175-183 %V 14 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2008_14_7_a14/ %G ru %F FPM_2008_14_7_a14