@article{oai:tsukuba.repo.nii.ac.jp:00015712,
 author = {Watanabe, Tadashi},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {273--319},
 title = {Approximative shape IV -UVn-maps and the Vietoris-Smale theorem-},
 volume = {12},
 year = {1988}
}