@article{oai:tsukuba.repo.nii.ac.jp:00017233,
 author = {Ageev, Sergei M. and Repovs, Dusan and Scepin, Evgenij V.},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {97--111},
 title = {The extension problem for complete UV^n-preimages},
 volume = {23},
 year = {1999}
}