1. R.G. Ridley: Mass Spectrometry Data Centre, Aldermaston, Paper presented at the NATO Mass Spectrometry Advanced Study Institute on 21 July 1966, Proceedings to be published.
2. I.C. Smith, W. Kelly, A. Brickstock and R.G. Ridley: Identification of Organic Compounds by Computer Matching and Retrieval of Low Resolution Mass Spectra (to be published).