8th International BAPT Conference "Power Transmissions 2022" : Varna, Bulgaria, September 5-8, 2022
19th International Stirling Engine Conference (ISEC 2021) : Rome, Italy, September 22-23, 2021
9th International BAPT Conference "Power Transmissions 2023" : Varna, Bulgaria, September 4-7, 2023
7th International BAPT Conference "Power Transmissions 2020" : Borovets, Bulgaria, June 10-13, 2020
Key Trends in Transportation Innovation (KTTI-2019) : Khabarovsk, Russia, October 24-26, 2019
6th International BAPT Conference "Power Transmissions 2019" : Varna, Bulgaria, June 19-22, 2019