@phdthesis{oai:nagoya.repo.nii.ac.jp:00020392, author = {Fujii, Yuri I. and 藤井, 悠里}, month = {Mar}, school = {名古屋大学, Nagoya University}, title = {Ionization Dynamics and Magnetorotational Instability in Protoplanetary and Circumplanetary Disks}, year = {2015} }