1. The reconstruction of a three dimensional structure from projections and its application to electron microscopy;Crowther,1970
2. Green, J., Perkins, W.J. and Stenning, F. The interactive aquisition and processing of images using a graphics tablet (to be published).
3. Negative staining methods in ‘Techniques for electron microscopy’ D. Kay;Horne,1965
4. Fine Structure of Adenovirus Type 5 I. Virus Capsid;Nermut;Virology,1975
5. Nermut, M.V. and Perkins, W.J. Assessment of the three dimensional structure of the adenovirus hexon (to be published).