@article{oai:tsukuba.repo.nii.ac.jp:00017567,
 author = {Ragozzine, Charles B. Jr.},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {103--111},
 title = {Hopf Algebras Generated by a Coalgebra},
 volume = {27},
 year = {2003}
}