Asymptotic solutions of oscillatory initial value problems

Symmetric hyperbolic linear differential equations

Kurt Friedrichs · Communications on Pure and Applied Mathematics · 1954 · 664 citations

Differential Equations, Nonlinear Hyperbolic Problem, Hyperbolic Equation +1

Asymptotic solution of some diffraction problems

Joseph B. Keller, Robert Michael Lewis, Bernard D. Seckler · Communications on Pure and Applied Mathematics · 1956 · 194 citations · Full text

On cauchy's problem for hyperbolic equations and the differentiability of solutions of elliptic equations

Peter D. Lax · Communications on Pure and Applied Mathematics · 1955 · 148 citations

Elliptic Equation, Hyperbolic Equations, Parabolic Equation +4

Asymptotic Solution of Linear Hyperbolic Partial Differential Equations

Morris Kline · Indiana University Mathematics Journal · 1954 · 15 citations · Full text

Nonlinear Hyperbolic Problem, Asymptotic Solution, Hyperbolic Equation +1