@article{article5fe8f654,
title   = {Involutions and free pairs of bicyclic units in integral group rings of non-nilpotent groups},
author = {Gonçalves, Jairo Zacarias and Passman, Donald S},
year = {2015},
doi = {10.1090/S0002-9939-2015-12550-6},
journal   = {Proceedings of the American Mathematical Society}
}