1. J. John, “Californium Based Neutron Radiography for Corrosion Detection in Aircraft”; Practical Applications of Neutron Radiography and Gaging, ASTM STP 586, American Society for Testing and Materials, 1970, 168
2. W.E. Dance, “Neutron Radiographic Nondestructive Evaluation of Aerospace Structures”, Ibid., 137
3. J.John, “Neutron.Radiography for Nondestructive Testing”, Proc. Conf. “Nondestructive Evaluation of Materials”, (Burke, J.J., Weiss V., Eds.), Plenum Press, New York, (1979), 151
4. Neutron Radiography Newsletters, “Neutron Radiography and Autoradiography at the J.Stefan Institute in Ljubljana”, Brit. J. of NDT, 28, (2), (1986), 93
5. J. Rant et al., Proc. Nat. Conf. on Utilization of Nuclear Research Reactors in Yugoslavia, Belgrade (1978), 505–13