@article{JRAM_1981__328_152393,
     author = {W.M. Kantor and B. Fein and M. Schacher},
     title = {Relative {Brauer} groups {II.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {39--57},
     publisher = {mathdoc},
     volume = {328},
     year = {1981},
     zbl = {0457.13004},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1981__328_152393/}
}