Baues, Hans-Joachim Max Planck Institute for Mathematics, Max Planck Society;
Pirashvili, Teimuraz Max Planck Institute for Mathematics, Max Planck Society;
Baues, H.-J., & Pirashvili, T. (2005). Spaces associated to quadratic endofunctors of the category of groups. Extracta Mathematicae, 20(2), 99-136.