@article{10_4153_CMB_1965_033_5,
     author = {Takahashi, Shuichi},
     title = {A {Characterization} of {Group} {Rings} as a {Special} {Class} of {Hopf} {Algebras}},
     journal = {Canadian mathematical bulletin},
     pages = {465--475},
     year = {1965},
     volume = {8},
     number = {4},
     doi = {10.4153/CMB-1965-033-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-033-5/}
}