@article{GT_2017_21_6_a10,
     author = {Friedl, Stefan and Schreve, Kevin and Tillmann, Stephan},
     title = {Thurston norm via {Fox} calculus},
     journal = {Geometry & topology},
     pages = {3759--3784},
     publisher = {mathdoc},
     volume = {21},
     number = {6},
     year = {2017},
     doi = {10.2140/gt.2017.21.3759},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2017.21.3759/}
}