Robert H. Gilman, Robert P. Kropholler, Saul Schleimer. Groups whose word problems are not semilinear. Groups Complexity Cryptology, 10(2):53-62, 2018. [doi]
@article{GilmanKS18,
title = {Groups whose word problems are not semilinear},
author = {Robert H. Gilman and Robert P. Kropholler and Saul Schleimer},
year = {2018},
doi = {10.1515/gcc-2018-0010},
url = {https://doi.org/10.1515/gcc-2018-0010},
researchr = {https://researchr.org/publication/GilmanKS18},
cites = {0},
citedby = {0},
journal = {Groups Complexity Cryptology},
volume = {10},
number = {2},
pages = {53-62},
}