Algebraic realization of chain maps in differential graded algebras over a principal ideal domain. Extracta Mathematicae, [S. l.], v. 40, n. 2, p. 219–234, 2025. DOI: 10.17398/2605-5686.40.2.219. Disponível em: https://revista-em.unex.es/index.php/EM/article/view/2368. Acesso em: 1 sep. 2026.