Kovalevsky, S., and G. Zalyshna. “Ways to Improve the Reliability and Speed of Operation of the Locking Devices of Pneumatic Conveying Installations for Proper Environmental Protection”. Engineering, no. 22 (April 26, 2019): 6-10. Accessed November 11, 2019. http://jmash.uipa.edu.ua/index.php/jMASH/article/view/135.