@article{GDZPPN002234890,
title = {Moduli spaces for fundamental groups and Link invariants derived from the lower central series.},
journal = {Manuscripta mathematica},
volume = {79},
year = {1993},
pages = {225-242},
zbl = {0811.55008},
url = {http://dml.mathdoc.fr/item/GDZPPN002234890}
}
Papadima, Stefan; Markl, Martin. Moduli spaces for fundamental groups and Link invariants derived from the lower central series.. Manuscripta mathematica, Tome 79 (1993) pp. 225-242. http://gdmltest.u-ga.fr/item/GDZPPN002234890/