Čubars, Edgars, and Gotfrīds Noviks. “EVALUATION OF REED RECOURSES IN THE LUBANS LAKE AND SUBSTANTIATION OF THEIR USE IN ENERGY PRODUCTION”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (August 3, 2015): 66–73. Accessed November 23, 2024. https://journals.rta.lv/index.php/ETR/article/view/1092.