@article{JTNB_2010__22_3_583_0,
     author = {Clark, Pete L.},
     title = {The period-index problem in {WC-groups} {IV:} a local transition theorem},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {583--606},
     publisher = {Universit\'e Bordeaux 1},
     volume = {22},
     number = {3},
     year = {2010},
     doi = {10.5802/jtnb.734},
     zbl = {1258.11094},
     mrnumber = {2769333},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/jtnb.734/}
}