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) Dantong Liu and Lifeng Wang and Yue Chen and Maged Elkashlan and Kai-Kit Wong and Robert Schober and Lajos Hanzo,User Association in 5G Networks: A Survey and an Outlook,IEEE Communications Surveys & Tutorials,1553-877X,Institute of Electrical and Electronics Engineers (IEEE),2016,18,2,1018-1044,https://cir.nii.ac.jp/crid/1363107369100478720,https://doi.org/10.1109/comst.2016.2516538