@phdthesis{oai:tsukuba.repo.nii.ac.jp:00008699, author = {樋口, 敏春 and Higuchi, Toshiharu}, month = {}, note = {1999}, school = {筑波大学, University of Tsukuba}, title = {電子管用陰極の開発と応用に関する研究}, year = {2000} }