On the number of abstract regular polytopes whose automorphism group is a Suzuki simple group Sz(q). - Ann Kiefer; Dimitri Leemans (J. Comb. Theory A, 2010)

From the Poincaré Theorem to generators of the unit group of integral group rings of finite groups. - Eric Jespers; S. O. Juriaans; Ann Kiefer; A. de A. e Silva; A. C. Souza Filho (Math. Comput., 2015)

Presentations of groups acting discontinuously on direct products of hyperbolic spaces. - Eric Jespers; Ann Kiefer; Ángel del Río (Math. Comput., 2016)