Approximate Solution of Initial Boundary Wave Equation Problems by Boundary-Value Techniques A new boundary-value technique is proposed for the treatment of initial-boundary-value problems for linear and mildly nonlinear wave equations. Several illustrative examples are offered to demonstrate the ease with which the method can be applied. CACM November, 1968 Greenspan, D. initial-boundary-value problem, wave equation, boundary-value technique 5.15 5.17 CA681106 JB February 21, 1978 2:48 PM 1673 5 1673 1673 5 1673 1673 5 1673