1. ASTM E545-91. Standard method for determining image quality in direct thermal Neutron radiographic testing.
2. ASTM E803-91. Standard method for determining the L/D ratio of neutron radiographic beam.
3. ASTM E1496-97. Standard method for neutron radiographic dimensional measurement.
4. Brenizer, J.S., 1992. Proceedings of the Fourth World Conference in Neutron Radiography, Vol. 4, San Francisco, USA, May 10–16, 647–652.
5. Brenizer, J.S., et al., 1992. Current and future Neutron Radiologic NDT standards. ASTM STP 1151, ASTM, Philadelphia, 1992.