@article{JRAM_1970__245_151063,
     author = {K.H.M. Glass and R.A. Moore and G. Whaples},
     title = {On extending a norm residue symbol.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {124--132},
     publisher = {mathdoc},
     volume = {245},
     year = {1970},
     zbl = {0211.07902},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1970__245_151063/}
}