@article{oai:kindai.repo.nii.ac.jp:00006833,
 author = {Fujii,  Seiji},
 issue = {23/24},
 journal = {近畿大学工学部研究報告, Research reports of the Faculty of Engineering, Kinki University},
 month = {Dec},
 pages = {143--146},
 title = {Perfect Normality of Subsets of M X ω₁},
 year = {1990},
 yomi = {フジイ, セイジ}
}