TY - JOUR AU - Mladen Bestvina TI - A Bers-like proof of the existence of train tracks for free group automorphisms JO - Fundamenta Mathematicae PY - 2011 SP - 1 EP - 12 VL - 214 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/fm214-1-1/ DO - 10.4064/fm214-1-1 LA - en ID - 10_4064_fm214_1_1 ER -