2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/110079We use a result of Barron, Dong and Mason to give a natural isomorphism between the category of twisted modules and the category of quasi-modules of a certain type for a general vertex operator algebra.Contribution to the proceedings of the conference in honor of James Lepowsky and Robert Wilson. 12 pagesQuantum Algebra17B69Twisted modules and quasi-modules for vertex operator algebrastext