@article{oai:tsukuba.repo.nii.ac.jp:00016057, author = {Koyama, Noritaka and Miyachi, Jun-ichi}, issue = {2}, journal = {Tsukuba Journal of Mathematics}, month = {Dec}, pages = {183--192}, title = {Homogeneous tubes over one-point extensions}, volume = {10}, year = {1986} }