@article{oai:repository.dl.itc.u-tokyo.ac.jp:00025269, author = {OWARI, Toshiaki and KASAHARA, Hisatomi and OIKAWA, Nozomi and FUKUOKA, Satoshi}, journal = {東京大学農学部演習林報告}, month = {}, pages = {19--28}, title = {Seasonal variation of global positioning system (GPS) accuracy within the Tokyo University Forest in Hokkaido}, volume = {120}, year = {2009} }