@article{GDZPPN00221038X,
title = {On the center of Galois groups of maximal pro-p extensions of algebraic number fields with restricted ramification.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {435},
year = {1993},
pages = {197-208},
zbl = {0766.11044},
url = {http://dml.mathdoc.fr/item/GDZPPN00221038X}
}
Yamagishi, Masakazu. On the center of Galois groups of maximal pro-p extensions of algebraic number fields with restricted ramification.. Journal für die reine und angewandte Mathematik, Tome 435 (1993) pp. 197-208. http://gdmltest.u-ga.fr/item/GDZPPN00221038X/