Non-commutative algebraic geometry of semi-graded rings. - Oswaldo Lezama; Edward Latorre (Int. J. Algebra Comput., 2017)

Elementary Matrix-computational Proof of Quillen-Suslin Theorem for Ore Extensions. - William Fajardo; Oswaldo Lezama (Fundam. Informaticae, 2019)

Koszulity and Point Modules of Finitely Semi-Graded Rings and Algebras. - Oswaldo Lezama; Jaime Gómez (Symmetry, 2019)

Center of skew PBW extensions. - Oswaldo Lezama; Helbert Venegas (Int. J. Algebra Comput., 2020)