OsadchukA.V., OsadchukV.S., OsadchukI.A., IlchukD.R., and PastushenkoG.A. “Solid State Radio-Measuring Optical-Frequency Transducer of Gas Flow Rate”. Physics and Chemistry of Solid State 22, no. 2 (April 20, 2021): 224-232. Accessed October 17, 2021. http://mif.pu.if.ua/index.php/pcss/article/view/4764.