TY - JOUR AU - Dennis The TI - Contact Geometry of Hyperbolic Equations of Generic Type JO - Symmetry, integrability and geometry: methods and applications PY - 2008 VL - 4 UR - http://geodesic.mathdoc.fr/item/SIGMA_2008_4_a57/ LA - en ID - SIGMA_2008_4_a57 ER -