ABRAMYAN, Mikhail Eduardovich; 						MELNIKOV, Boris Feliksovich.
 A Program Study of the Union of Semilattices on a Set of Subsets of Grids of the Waterloo Language.
<strong>Modern Information Technologies and IT-Education</strong>, [S.l.], v. 19, n. 3, p. 531-542, oct. 2023.
ISSN 2411-1473. Available at: &lt;<a href="http://sitito.cs.msu.ru/index.php/SITITO/article/view/1012" target="_new">http://sitito.cs.msu.ru/index.php/SITITO/article/view/1012</a>&gt;. Date accessed: 14 sep. 2025.
doi: <a href="https://doi.org/10.25559/SITITO.019.202303.531-542">https://doi.org/10.25559/SITITO.019.202303.531-542</a>.