@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040263, author = {Andruskiewitsch, Nicolas}, issue = {1}, journal = {Journal of mathematical sciences, the University of Tokyo}, month = {}, note = {application/pdf}, pages = {181--215}, title = {Examples of Self-Dual Hopf Algebras}, volume = {6}, year = {1999} }