@inproceedings{inproceedings4fa21639,
title   = {Semigroups identities in the group of units of integral group rings},
author = {Gonçalves, Jairo Zacarias},
year = {1994},
publisher = {Imecc-Unicamp},
booktitle   = {Encontro de Álgebra IME-USP/IMECC-UNICAMP}
}