[1] UNIV SHEFFIELD,SCH MAT,DIV CERAM GLASSES & POLYMERS,COMPOSITE MAT RES CTR,SHEFFIELD S10 2TN,S YORKSHIRE,ENGLAND
[2] UNIV MANCHESTER,INST SCI & TECHNOL,DEPT CHEM,SURF ANAL SERV,MANCHESTER M60 1QD,LANCS,ENGLAND
[3] ROYAL AIRCRAFT ESTAB,DEPT MAT & STRUCT,FARNBOROUGH GU14 6TD,HANTS,ENGLAND