1. R. P. Reiff, “Introduction to the FAST/HAL Program”, “Proceedings of the Workshop on Heavy Axle Loads”, (Pueblo, 1990) paper 5.
2. S. Marich and U. Maass, “Higher Axle Loads are Feasible — Economics and Technology Agree”, Third International Heavy Haul Railway Conference, (Vancouver, 1986) pp. 18–31.
3. Effect of Increasing Axle Loads on Rail Fatigue Life;AM Zarembski,1981
4. R. A. Armstrong, T. R. Wells, D. H. Stone, and A. M. Zarembski, “Impact of Car Loads on Rail Defect Occurrences”, Second International Heavy Haul Railway Conference, (Colorado Springs, 1982) pp. 129–135.
5. W. Heller, E. Koerfer, and H. Schmedders, “Production of Special-Grade Naturally Hard Rails in Germany and Experience Gained in Operation”, Second International Heavy Haul Railway Conference , (Colorado Springs, 1982) pp. 170–177.