1. Best, C.F., Coleman, G.J., Graveling, R.A., Simpson, G.C., Talbot, C.F. 1989. Improved hearing protection in a mining environment. Final report No. ECSC Contract 7249-13-019. Report no TM/89/09, Institute of Occupational Medicine, Edinburgh.
2. Coleman, G.J., Graves, R.J., Collier, S.G., Golding, D., Nicholl, A.G.McK., Simpson, G.C., Sweetland, K.F., Talbot, C.F., 1984. Communications in noisy environments. Final Report on ECSC contract 7206/00/8/09, Report No. TM/84/1. Institute of Occupational Medicine, Edinburgh.
3. Coleman, G.J., Leamon, T.B., Drayton, I.D.R., 1980. Auditory communication in the mining industry. Final report on ECSC project 6245-11/8/019, Report No. TM/80/01. Institute of Occupational Medicine, Edinburgh.
4. Dynamic range and asymmetry of the auditory filter;Glasberg;Journal of the Acoustical Society of America,1984
5. Frequency resolution as a function of hearing threshold level and age;Lutman;Journal of the Acoustical Society of America,1991