1. Billing J. R. (1982). “Dynamic tests of bridges in Ontario 1980.” MTC Res. and Development Reports Downsview Ontario Canada Vol. 26.
2. Cantieni R. (1983). “Dynamic load tests on highway bridges in Switzerland.” Report No. 211 Swiss Federal Laboratories of Materials Testing and Research Dubendorf Switzerland.
3. Fancher P. S. Ervin R. D. MacAdam C. C. and Winkler C. B. (1980). “Measurement and representation of the mechanical properties of truck leaf springs.” Technical Paper Series 800905 Society of Automotive Engineers Warrendale Pa.
4. Fancher P. S. and Ervin R. D. (1986). “A component factbook for straight and articulated heavy trucks ” UMTRI‐86‐12 University of Michigan Transportation Research Institute Ann Arbor Mich.
5. Hwang E.‐S. (1990). “Dynamic loads for girder bridges ” thesis presented to the University of Michigan Ann Arbor Mich. in partial fulfillment of the requirements for the degree of Doctor of Philosophy.