@article{article84c1e86c,
title   = {On the structure of surface pure braid groups (vol 182, pg 33, 2003)},
author = {Gonçalves, Daciberg Lima and Guaschi, John},
year = {2004},
doi = {10.1016/S0022-4049(02)00309-2},
journal   = {Journal of Pure and Applied Algebra}
}