@article{1183534139,
author = {Birman, Joan S. and Hilden, Hugh M.},
title = {Isotopies of homeomorphisms of Riemann surfaces and a theorem about Artin's braid group},
journal = {Bull. Amer. Math. Soc.},
volume = {78},
number = {4},
year = {1972},
pages = { 1002-1004},
language = {en},
url = {http://dml.mathdoc.fr/item/1183534139}
}
Birman, Joan S.; Hilden, Hugh M. Isotopies of homeomorphisms of Riemann surfaces and a theorem about Artin's braid group. Bull. Amer. Math. Soc., Tome 78 (1972) no. 4, pp. 1002-1004. http://gdmltest.u-ga.fr/item/1183534139/