TY - JOUR AU - Paul F. Baum AU - Piotr M. Hajac TI - Local Proof of Algebraic Characterization of Free Actions JO - Symmetry, integrability and geometry: methods and applications PY - 2014 VL - 10 UR - http://geodesic.mathdoc.fr/item/SIGMA_2014_10_a59/ LA - en ID - SIGMA_2014_10_a59 ER -