@article{JRAM_1962__209_150507,
     author = {A. Fr\"ohlich and J. Tate and J.-P. Serre},
     title = {A different with an odd class.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {6--7},
     publisher = {mathdoc},
     volume = {209},
     year = {1962},
     zbl = {0105.02903},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1962__209_150507/}
}