Chen Zhiqian, Tomita Mutuwo, 2000, New Adaptive Sliding Observers for Position- and Velocity-Sensorless Controls of Brushless DC Motors, IEEE Trans. on Industrial Electronics, Vol. 47, No. 3, pp. 582-591

Franklin Gene F. , Powell J. David, Emami-naeini Abbas, 1995, Feedback Control of Dynamic Systems, Addison Wesley

Solsona Jorge, Valla Maria I. , Muravchik Chrlos, 1996, A Nonlinear Reduced Order Observer for Permanent Magnet Synchronous Motors, IEEE Trans. on Industrial Electronics, Vol. , No. , pp. 492-497

Lin Qiaobin, Lu Xiaofen, Guo Xinhua, Yan Bingjun , Guo Baojia, 2014 IEEE Conference and Expo, The Simulation of Sensorless Control of BLDC Based on the Counting of PWM Pulses, Transportation Electrification Asia-Pacific

Brown R. H. , Schneider S. C. , Mulligan M. G. , Feb 1992, Analysis of algorithms for velocity estimation from discrete position versus time data, IEEE Trans. Ind. Electron, Vol. 39, pp. 11-19

Su Y. X. , Zheng C. H. , Mueller P. C. , Duan B. Y. , 2006, A Simple Improved Velocity Estimation for Low-Speed Regions Based on Position Measurements Only, IEEE Trans. on Control Systems Technology, Vol. 14, No. 5, pp. 937-941