Kaķītis, Aivars. “ENERGOECONOMIC PROCESSING TECHNOLOGIES FOR BEE FARMING PRODUCTS”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 20, 2001): 41–49. Accessed May 6, 2024. https://journals.ru.lv/index.php/ETR/article/view/1933.