@article{10_1017_S0017089500031839,
     author = {Dokuchaev, Michael A. and Gon\c{c}alves, Jairo Z.},
     title = {Semigroup identities on units of integral group rings},
     journal = {Glasgow mathematical journal},
     pages = {1--6},
     year = {1997},
     volume = {39},
     number = {1},
     doi = {10.1017/S0017089500031839},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500031839/}
}