@inbook{BurdeZieschang+2002+52+67,
url = {https://doi.org/10.1515/9783110198034.52},
title = {Chapter 4. Commutator Subgroup of a Knot
      Group},
booktitle = {Knots},
author = {Gerhard Burde and Heiner Zieschang},
publisher = {De Gruyter},
address = {Berlin, New York},
pages = {52--67},
doi = {doi:10.1515/9783110198034.52},
isbn = {9783110198034},
year = {2002},
lastchecked = {2026-04-29}
}