著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Hesham ElSawy and Ekram Hossain,Two-Tier HetNets with Cognitive Femtocells: Downlink Performance Modeling and Analysis in a Multichannel Environment,IEEE Transactions on Mobile Computing,1536-1233,Institute of Electrical and Electronics Engineers (IEEE),2014-03,13,3,649-663,https://cir.nii.ac.jp/crid/1361137044248546048,https://doi.org/10.1109/tmc.2013.36