Carabeo, Ramón J., and Luis A. Castro. “Designing a Generative AI–Powered Virtual Tutor: Studying Interaction Modality and Avatar Presence on the User Experience”. Avances En Interacción Humano-Computadora, vol. 10, no. 1, Nov. 2025, pp. 52-59, doi:10.47756/aihc.y10i1.201.