TY - JOUR AU - A. O. Remizov TI - Geodesics on 2-surfaces with pseudo-Riemannian metric: singularities of changes of signature JO - Sbornik. Mathematics PY - 2009 SP - 385 EP - 403 VL - 200 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2009_200_3_a4/ LA - en ID - SM_2009_200_3_a4 ER -