R. Shumkova and R. Balkanska, “Influence of IMMUNOSTART HERB feeding on the bee colonies development”, BJAS, vol. 27, no. 5, pp. 896–902, Oct. 2021, Accessed: Nov. 11, 2026. [Online]. Available: https://agriacad.eu/ojs/index.php/bjas/article/view/2126