da S. Housell, M., da Silva, E. L., Filho, M. R., & de Sousa, M. P. A. (2010). A Model to Distinguish Between Educational and Training 3D Virtual Environments and its Application. International Journal of Virtual Reality, 9(2), 63–72. https://doi.org/10.20870/IJVR.2010.9.2.2771