Rasyid , Randika Dwi Maulana, and ZK Abdurahman Baizal. “Music Recommender System Using K-Nearest Neighbor and Particle Swarm Optimization”. Indonesian Journal on Computing (Indo-JC), vol. 7, no. 2, Aug. 2022, pp. 45-52, doi:10.34818/INDOJC.2022.7.2.649.