1. K. R. Bentley, J. D. Davies, J. D. Dowell, C. McLeod, T. J. McMahon, H. B. van der Raay, T. G. Rhoades, F. J. Wickens, C. J. S. Damerell, R. J. Homer and M. J. Hotchkiss, University of Birmingham, Physics Department Paper 71-18 (1971).
2. A simple capacitor read-out for wire spark chambers in magnetic fields
3. F. Turkot, private communication.
4. J. A. Strong, private communication.