@article{GDZPPN002068745,
title = {Groups with no infinite perfect subgroups and aspherical 2-complexes.},
journal = {Commentarii mathematici Helvetici},
volume = {68},
year = {1993},
pages = {333-340},
zbl = {0791.57003},
url = {http://dml.mathdoc.fr/item/GDZPPN002068745}
}
Dyer, Michael N. Groups with no infinite perfect subgroups and aspherical 2-complexes.. Commentarii mathematici Helvetici, Tome 68 (1993) pp. 333-340. http://gdmltest.u-ga.fr/item/GDZPPN002068745/