Guilherme Leal

Presentations of the unit group of an order in a non-split quaternion algebra

Ángel del Río, Eric Jespers, Capi Corrales, 2004 .

Generators of large subgroups of the unit group of integral group rings

Eric Jespers, E. Jespers, G. Leal, 1993 .

CENTRAL IDEMPOTENTS IN THE RATIONAL GROUP ALGEBRA OF A FINITE NILPOTENT GROUP

Eric Jespers, Antonio Paques, E. Jespers, 2003 .