@article{10_4171_ggd_747,
     author = {Laurent Bartholdi and Sergei O. Ivanov and Danil Fialkovski},
     title = {On commutator length in free groups},
     journal = {Groups, geometry, and dynamics},
     pages = {191--202},
     year = {2024},
     volume = {18},
     number = {1},
     doi = {10.4171/ggd/747},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/747/}
}