1. H. Schwarz, “Lower pressure limit of common gauges,”Members Special Supplement, Vacuum Symposium Transactions, 1960(Pergamon Press, New York, 1961).
2. P. Redhead, “Errors in the measurement of pressure with ionization gauges,”Vacuum Symposium Transactions, 1960(Pergamon Press, New York, 1961), p. 108.
3. G. Reich, “The influence of adsorption and desorption on measurements of low pressures,”Vacuum Symposium Transactions, 1960(Pergamon Press, New York, 1961), p. 112.
4. W. B. Nottingham, “A detailed examination of the principles of ion gauge calibration,”Vacuum Symposium Transactions, 1960(Pergamon Press, New York, 1961), p. 117.
5. D. J. Santeler, “Pressure simulation of outer space,”Vacuum Symposium Transactions, 1959(Pergamon Press, New York, 1960), p. 129.