JSTOR Daily

An Initial Value Problem for all Hyperbolic Partial Differential Equations of Second Order with Three Independent Variables

Annals of Mathematics, Vol. 40, No. 4 (Oct., 1939), pp. 862-891 (30 pages) ...
JSTOR Daily

Asymptotic Solutions of Inhomogeneous Initial Boundary Value Problems for Weakly Nonlinear Partial Differential Equations

SIAM Journal on Applied Mathematics, Vol. 22, No. 4 (Jun., 1972), pp. 629-647 (19 pages) The two-time perturbation procedure is applied to a class of inhomogeneous initial boundary value problems for ...