@article{oai:repository.dl.itc.u-tokyo.ac.jp:00032455,
 author = {Tsukuda, Tameshige},
 issue = {2},
 journal = {地震研究所彙報},
 month = {},
 note = {application/pdf},
 pages = {227--241},
 title = {Radon-gas Monitoring by Gamma-ray Measurements on the Ground for Detecting Crustal Activity Changes : Preliminary Study by Repeat Survey Method},
 volume = {83},
 year = {2008}
}