%0 Journal Article %A S. S. Davidov %T On parastrophes of abelian invertible algebras %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2008 %P 39-43 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2008_3_a5/ %G ru %F UZERU_2008_3_a5