VOIKU, Ivan. THE DEVICE OF THE SHALLOW FRAME (HALF-FRAME) WITH QUICK FITTING OF A BEESWAX FOUNDATION AND ITS ADVANTAGE. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 336–338, 2019. DOI: 10.17770/etr2019vol1.4104. Disponível em: https://journals.rta.lv/index.php/ETR/article/view/4104.. Acesso em: 19 dec. 2024.