1. Department of Mathematics, The University of Danang – University of Science and Education, 459 Ton Duc Thang, Danang City, Vietnam
2. Department of Algebra and Mathematical Logic, Kazan (Volga Region) Federal University, 18 Kremlyovskaya Street, Kazan 420008, Russia
3. Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao, Go Vap District, Ho Chi Minh City, Vietnam
4. Department of Mathematics, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey