%0 Journal Article
%A D. G. Meshchaninov
%T Some families of closed classes in~$P_k$ defined by additive formulas
%J Diskretnaya Matematika
%D 2021
%P 100-116
%V 33
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DM_2021_33_2_a7/
%G ru
%F DM_2021_33_2_a7