N.A, Gasratova, Zuev V.S., and Trukhin M.M. “Concerning the Determination of the Geometrical Parameters of the Optical Element of a Deep-Water Surveillance System”. International Journal of Engineering and Technology 7, no. 4.36 (December 9, 2018): 957–961. Accessed April 28, 2025. https://sciencepubco.com/index.php/IJET/article/view/24930.