Бобер, Анатолий, Александр Лев, and Лидия Проценко. “RESEARCH OF BREWING QUALITIES AROMATIC AND BITTER HOPS VARIETIES”. Modern engineering and innovative technologies 3, no. 05-03 (November 15, 2017): 100–103. Accessed May 6, 2024. https://www.moderntechno.de/index.php/meit/article/view/meit05-03-040.