@article{RSMUP_2020__144__177_0,
     author = {Lewis, Wayne and Loth, Peter and Mader, Adolf},
     title = {Free subgroups with torsion quotients and profinite subgroups with torus quotients},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {177--195},
     volume = {144},
     year = {2020},
     doi = {10.4171/rsmup/64},
     mrnumber = {4186454},
     zbl = {1504.22005},
     language = {en},
     url = {http://archive.numdam.org/articles/10.4171/rsmup/64/}
}