@article{MM2_1993__81_3-4_155898,
     author = {Stefan Papadima and Martin Markl},
     title = {Moduli spaces for fundamental groups and {Link} invariants derived from the lower central series.},
     journal = {Manuscripta mathematica},
     pages = {225--242},
     publisher = {mathdoc},
     volume = {81},
     number = {3-4},
     year = {1993},
     zbl = {0811.55008},
     url = {http://geodesic.mathdoc.fr/item/MM2_1993__81_3-4_155898/}
}