@phdthesis{oai:niigata-u.repo.nii.ac.jp:02000258, author = {奥井, 恒}, month = {2022-04-04, 2022-04-04}, note = {新大院博(理)第460号}, school = {新潟大学, Niigata University}, title = {ニュートリノ質量と背景重力波}, year = {} }