Rif’an, M., F. Yusivar, and B. Kusumoputro. “Design of Extended Kalman Filter Speed Estimator and Single Neuron-Fuzzy Speed Controller for Sensorless Brushless DC Motor”. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), vol. 10, no. 1-5, Feb. 2018, pp. 157-61, https://jtec.utem.edu.my/jtec/article/view/3648.