Croassacipto, M. et al. 2020. Tone Classification Matches Kodàly Handsign with the K-Nearest Neighbor Method at Leap Motion Controller. International Journal on Information and Communication Technology (IJoICT). 5, 2 (Jun. 2020), 40–45. DOI:https://doi.org/10.21108/IJOICT.2019.52.283.