1. 3. R. C. Rice, R. Rungta, and D. Broek (1983 ) Post-Service Rail Defect Analysis , Third Interim Report submitted to Department of Transportation, by Battelle's Columbus Division, Columbus, Ohio, Contract NO. DOT-TSC-1708.
2. 4. R. C. Rice, R. Rungta, and P. M. Scott (1984 ) Post-Service Rail Defect Analysis , Fourth Technical Report submitted to Department of Transportation, by Battelle's Columbus Division, Columbus, Ohio, Contract No. DOT-TSC-1708 and DTRS-57-83C-00076.
3. 5. D. H. Skinner, and P. A. Judd (1981 ) A metallographic study of fatigue defects in rails , pp.68 -72 . AIM 34th Ann. Conf., Queensland, Australia.