TY - JOUR AU - Sabina Hossenfelder TI - The Soccer-Ball Problem JO - Symmetry, integrability and geometry: methods and applications PY - 2014 VL - 10 UR - http://geodesic.mathdoc.fr/item/SIGMA_2014_10_a73/ LA - en ID - SIGMA_2014_10_a73 ER -