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) Yongjun Xu and Guan Gui and Haris Gacanin and Fumiyuki Adachi,"A Survey on Resource Allocation for 5G Heterogeneous Networks: Current Research, Future Trends, and Challenges",IEEE Communications Surveys & Tutorials,1553-877X,Institute of Electrical and Electronics Engineers (IEEE),2021,23,2,668-695,https://cir.nii.ac.jp/crid/1360861293074419072,https://doi.org/10.1109/comst.2021.3059896