Vakulenko, Olegh, and Olesja Grygorieva. “Nonlinear Dynamics of Degradation of Vallisneria Spiralis L. Chlorophyll Photoluminescence at High Excitation Levels”. Open Science Journal 3, no. 1 (March 15, 2018). Accessed September 17, 2025. https://www.osjournal.org/ojs/index.php/OSJ/article/view/1358.