REFERENCES
- Lawrence , C. A. and Chen , K. Z. 1986 . J. Text. Inst. , 77 : 139
- Aron , R. J. 1973 . Ph.D. Thesis University of Manchester .
- Lawrence , C. A. 1977 . Ph.D. Thesis University of Bradford .
- Chen , K. Z. 1984 . Ph.D. Thesis University of Manchester .