Shabbir A, Khan HR, Ali SA, Rizvi S. Design and Performance Analysis of Multi-tier Heterogeneous Network through Coverage, Throughput and Energy Efficiency. Eng. Technol. Appl. Sci. Res. [Internet]. 2017 Dec. 18 [cited 2024 Nov. 27];7(6):2345-50. Available from: https://etasr.com/index.php/ETASR/article/view/1256