%0 Journal Article %A K. S. Vorushilov %T Complete sets of polynomials in bi-involution on nilpotent seven-dimensional Lie algebras %J Sbornik. Mathematics %D 2021 %P 1193-1207 %V 212 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/SM_2021_212_9_a0/ %G en %F SM_2021_212_9_a0