An application of Ungar's differential transform to elastodynamics

In recent years, a lot of writers have used Cagniard-de Hoop's method^1],2] to solve some problems of elastic wave. But it is a difficult and complicated task to change the path of integration when we use this method. A differential transform by A. Ungar^3–6] can obviate this difficulty. In this paper, we use Ungar's differential transform to solve a case of Lamb's problem^1],2].