@article{oai:repo.qst.go.jp:00045371, author = {Oka, Mitsuaki and Shimo, Michikuni and Tokonami, Shinji and Sorimachi, Atsuyuki and Takahashi, Hiroyuki and Ishikawa, Tetsuo and 下 道國 and 床次 眞司 and 反町 篤行 and 高橋 博路 and 石川 徹夫}, journal = {The Natural Radiation Environment : 8th International Symposium (NRE VIII), Buzios, Rio de Janeiro, Brazil, 7-12 October 2007 (AIP Conference Proceedings ; vol. 1034)}, month = {Nov}, pages = {189--192}, title = {Measurement of indoor radon-222 and radon-220 concentrations in central Japan}, volume = {1034}, year = {2008} }