Álvarez-Álvarez, C., Sanchez-Ruiz, L., & Montoya-del-Corte, J. (2019). Proposal of a questionnaire to measure the level of interaction in the university classrooms: version for teachers, students and observers. WPOM-Working Papers on Operations Management, 10(1), 1–28. https://doi.org/10.4995/wpom.v10i1.11245