“…After the values , , and are determined, using the initial conditions, ( 1,1 , 2,1 , 3,1 (2), the physical equations of elastic dynamics, (6) and (7), respectively, (V , +1 , V , +1 ), ( A , +1 , A , +1 ), ( 1, +1 , 2, +1 , 3, +1 ), and ( 1, +1 , 2, +1 , 3, +1 ) can be obtained. …”