1. Ayres, A., Allen, J. M. and Williams, A. E. 1971. A method of obtaining conventional histological sections from specimens after examination by scanning electron microscopy. J. Microscopy. 93, 247.
2. Boyde, A. and Woods, C. 1969. Preparation of animal tissue for surface scanning electron microscopy. J. Microscopy. 90, 221.
3. Coppleson, M. 1969. Carcinoma of the cervix, Epidemiology and aetiology. Brit. J. Hosp. Med. 2, 961.
4. Coppleson, M. and Reid, B. L. 1967. Pre-clinical carcinoma of the cervix uteri. Pergamon Press, London. p. 114.
5. Coppleson, M., Pixley, E. and Reid B. 1971. Oolposcopy—A Scientific and Practical Approach to the Cervix in Health and Disease. Charles C. Thomas. Springfield, Illinois. p. 77.