Regularity of Fundamental Solutions of Hyperbolic Equations Open PDF Document Details Document Type Technical Report Publication Date Nov 03, 1961 Accession Number AD0268212 Entities People Avner Friedman Organizations Stanford University Tags Communities of Interest Advanced Electronics Air Platforms Energy and Power Technologies Weapons Technologies DTIC Thesaurus Topics Analytic Functions Applied Mathematics California Cauchy Problem Contracts Differential Equations Engineering Equations Governments Inequalities Mathematics Military Research New York Partial Differential Equations Plane Waves United States United States Government