Machado, R., Oliveira, I., Ferreira, I., Neves, B. das, & Mello-Carpes, P. (2018). The membrane potential puzzle: a new educational game to use in physiology teaching. Advances in Physiology Education, 42(1), 79-83. https://doi.org/10.1152/advan.00100.2017 (Original work published 2018)