Miljkovic, Goran S., and Dragan B. Denic. “Redundant and Flexible Pseudorandom Optical Rotary Encoder”. Elektronika ir Elektrotechnika 26, no. 6 (December 18, 2020): 10-16. Accessed January 23, 2021. https://eejournal.ktu.lt/index.php/elt/article/view/25476.