@article{oai:tsukuba.repo.nii.ac.jp:00015861,
 author = {Yasui, Yoshikazu},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {243--247},
 title = {Some characterizations of a B-property},
 volume = {10},
 year = {1986}
}