1. Low frequency acoustic non-destructive test methods;Lange;Soviet J NDT,1978
2. The impedance method of non-destructive inspection;Cawley;NDT International,1984
3. Dynamic flexibility of a dry point contact;Lange;Soviet J NDT,1971
4. Recent advances in mechanical impedance analysis instrumentation of the evaluation of adhesive bonded composite structures;Teagle,1983
5. The operation of NDT instruments based on the impedance method;Cawley;Compos Struct,1985