@phdthesis{oai:nagoya.repo.nii.ac.jp:00017899,
 author = {Takeuchi, Yoshitaka and 竹内, 良貴},
 month = {Mar},
 school = {名古屋大学, Nagoya University},
 title = {Theoretical studies for proving the Universe with cosmological 21cm surveys: "from dark ages up to the present time"},
 year = {2014}
}