2021 5th International Conference on Electrical Engineering and Information Communication Technology (ICEEICT), Dhaka, Bangladesh. IEEE: 1-5; ISBN 978-1-6654-9523-3
2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), Rome, Italy. IEEE: 1-4; ISBN 978-1-6654-2995-5