Sets of Periods for Piecewise Monotone Tree Maps. - Lluís Alsedà; David Juher; P. Mumbrú (Int. J. Bifurc. Chaos, 2003)

On the Minimal Models for Graph Maps. - Lluís Alsedà; David Juher; P. Mumbrú (Int. J. Bifurc. Chaos, 2003)