Stashkevich, Ihar V., and Valeryja I. Herasimenka. 2017. “The Matrix Effect on the Quasi-Three-Level Neodymium Laser Parameters in the Stationary Regime”. Journal of the Belarusian State University. Physics, no. 1 (January): 88-94. https://journals.bsu.by/index.php/physics/article/view/429.