@article{GDZPPN002358433,
title = {The Galois group of the tangency problem for plane curves.},
journal = {Mathematica Scandinavica},
volume = {56},
year = {1985},
pages = {171-190},
zbl = {0566.14024},
url = {http://dml.mathdoc.fr/item/GDZPPN002358433}
}
Hefez, A.; Sacchiero, G. The Galois group of the tangency problem for plane curves.. Mathematica Scandinavica, Tome 56 (1985) pp. 171-190. http://gdmltest.u-ga.fr/item/GDZPPN002358433/