@article{MAN_1990__288_1_164751,
     author = {William G. McCallum},
     title = {Tate duality and wild ramification.},
     journal = {Mathematische Annalen},
     pages = {553--558},
     publisher = {mathdoc},
     volume = {288},
     number = {1},
     year = {1990},
     zbl = {0767.11057},
     url = {http://geodesic.mathdoc.fr/item/MAN_1990__288_1_164751/}
}