1. Mc Kague E L, Reynolds J D and Halkias J E 1975 Life Assur. Compos. Struct. AFML Tech. Rep. 1 51
2. Fried N 1967 Proceedings of the fifth symposium on naval structural mechanics (Philadelphia: Pergamon Press) p 813
3. Hertz J 1970 Proc. Soc. Aerospace Mater. Process Eng. 3 9
4. Browning C E and Whitney J M 1974 Fillers and reinforcements for plastics, advances in chemistry series, No. 134 (USA: Amer. Chem. Soc.) p 137
5. Browning C E and Hartness J T 1974 Proc. Third ASTM STP 546 284