@article{oai:waseda.repo.nii.ac.jp:00019542,
 author = {Kong, Marry and Yorkinov, Otabek and Tran, Thi Huynh Van and Shimamoto, Shigeru},
 journal = {GITS/GITI Research Bulletin},
 month = {Oct},
 pages = {3--12},
 title = {Elevation Angle-Based Diversity Access Employing High Altitude Platform Station and Unmanned Aerial Vehicle (UAV) for Urban Area Communications},
 volume = {2010-2011},
 year = {2011}
}