@article{10_14712_1213_7243_2015_240,
     author = {Hawthorn, Ian},
     title = {Nil series from arbitrary functions in group theory},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {1--13},
     year = {2018},
     volume = {59},
     number = {1},
     doi = {10.14712/1213-7243.2015.240},
     mrnumber = {3783804},
     zbl = {06890392},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.240/}
}