8th International BAPT Conference "Power Transmissions 2022" : Varna, Bulgaria, September 5-8, 2022
7th International BAPT Conference "Power Transmissions 2020" : Borovets, Bulgaria, June 10-13, 2020
6th International BAPT Conference "Power Transmissions 2019" : Varna, Bulgaria, June 19-22, 2019