2019 16th International Conference on Quality in Research (QIR): International Symposium on Electrical and Computer Engineering, Padang, Indonesia. IEEE: 1-5; ISBN 978-1-7281-1899-4
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, GA, USA. IEEE: 523-524; ISBN 978-1-7281-0693-9