@article{GDZPPN002208024,
title = {Galois rigidity of the \'etale fundamental groups of punctured projective lines.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {405},
year = {1990},
pages = {205-216},
zbl = {0702.14024},
url = {http://dml.mathdoc.fr/item/GDZPPN002208024}
}
Nakamura, Hiroaki. Galois rigidity of the étale fundamental groups of punctured projective lines.. Journal für die reine und angewandte Mathematik, Tome 405 (1990) pp. 205-216. http://gdmltest.u-ga.fr/item/GDZPPN002208024/