TY - JOUR AU - L. D. Pustyl'nikov TI - On analytic properties of an ellipse connected with singularities of its wave front JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 2001 SP - 984 EP - 985 VL - 56 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_2001_56_5_a7/ LA - en ID - RM_2001_56_5_a7 ER -