@article{oai:tsukuba.repo.nii.ac.jp:00017290,
 author = {Akaike, Yuji},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Oct},
 pages = {393--406},
 title = {Proper n-shape and the Freudenthal compactification},
 volume = {22},
 year = {1998}
}