Putrada, A. G., Ramadhan, N. G., & Abdurohman, M. (2020). Context-Aware Smart Door Lock with Activity Recognition Using Hierarchical Hidden Markov Model. Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control, 5(1), 37-44. https://doi.org/10.22219/kinetik.v5i1.904