@article{MS2_1977__41_166552,
     author = {M. Koppinen and T. Neuvonen},
     title = {An imprimitivity theorem for {Hopf} algebras.},
     journal = {Mathematica Scandinavica},
     pages = {193--198},
     publisher = {mathdoc},
     volume = {41},
     year = {1977},
     zbl = {0375.16011},
     url = {http://geodesic.mathdoc.fr/item/MS2_1977__41_166552/}
}