@article{DM_2022_34_1_a1, author = {A. A. Voronenko}, title = {On the universality of product for classes of linear functions of two variables}, journal = {Diskretnaya Matematika}, pages = {20--22}, year = {2022}, volume = {34}, number = {1}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DM_2022_34_1_a1/} }