Musienko, O., Kysterna, O. and Demyanenko, D. 2019. Electrochemically activated solutions in beekeeping. Bulletin of Sumy National Agrarian University. The series: Veterinary Medicine. 4 (47) (Dec. 2019), 28-34. DOI:https://doi.org/10.32845/bsnau.vet.2019.4.5.