Rushchitsky, J.J., and V.M. Yurchuk. “ON CERTAIN NONLINEAR WAVE EFFECT, WHICH OCCURS WHEN THE SECOND HARMONIC IS GENERATING”. Reports of the National Academy of Sciences of Ukraine, no. 1 (February 27, 2025): 22–30. Accessed March 9, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/16568.