Hoang Kha, H., Nguyen, X.-X., Vo, K. T. and Quoc Hung, D. (2024) “Spectral Efficiency for Active IRS-Aided Multi-Group Multicast Cognitive Radio Systems”, VNUHCM Journal of Engineering and Technology, 7(4), p. In press. doi: https://doi.org/10.32508/stdjet.v7i4.1390.