1. Application guide to neutron multiplicity counting;Ensslin,1998
2. A method for the estimation of fissile mass by measuring the number of neutron signals within a specific time interval
3. P.M.J. Chard S. Croft, Self-sheilding factors for the Cf-shuffler neutron interrogation technique, in: Proceedings of the 17th Annual ESARDA (European Safeguards Research and Development Association) Symposium on Safeguards and Nuclear Material Management, ESARDA 27 EUR 16290 EN, Aachen, Germany, May 9–11, 1995, pp. 557–562.
4. P.M.J. Chard, L. C-A Bourva S. Croft, A review of self shielding effects in active neutron interrogation, in: Proceedings of the 23rd Annual Meeting ESARDA (European Safeguards Research and Development Association) Symposium on Safeguards and Nuclear Material Management, EUR 19944 EN, Bruges, Belgium, May 8–10, 2001, pp. 540–551, ISBN: 92-894-1818-4.
5. L.C.-A. Bourva, S. Croft P.M.J. Chard, The effect of self-shielding in active neutron assay of plutonium-bearing aggregates, in: Proceedings of the 8th Environmental Management Nondestructive Assay Characterization Conference, December 11–12, 2001, Denver, Colorado, US Department of Energy, Idaho Operations Office, Idaho National Engineering and Environmental Laboratory Transuranic and Mixed Waste Focus Area, Institute of Nuclear Materials Management, Report INEEL/CON-01-01581, 2002, pp. 116–122.