Itnuit Janovitz-Freireich Bernard Mourrain Lajos Rónyai Ágnes Szántó On the Computation of Matrices of Traces and Radicals of Ideals http://arxiv.org/abs/0901.2778 2009 CoRR abs/0901.2778 db/journals/corr/corr0901.html#abs-0901-2778 informal publication