@article{MZ_1970__116_171379,
     author = {Luzius A. Gr\"unenfelder},
     title = {Hopf-Algebren und {Coradikal.}},
     journal = {Mathematische Zeitschrift},
     pages = {166--182},
     publisher = {mathdoc},
     volume = {116},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__116_171379/}
}