Santos, A. S., Carneiro, J. F., Silva, A. F., Abreu, P., Garrido, C., Marques, C., … Restrivo, T. (2020). Child Friendly App for Spelling Training. International Journal of Online and Biomedical Engineering (iJOE), 16(04), pp. 82–90. https://doi.org/10.3991/ijoe.v16i04.12315