1. De Beer M, Horak E, Visser AT (1989) The multidepth deflectometer (MDD) system for determining the effective elastic modules of pavement layers. In: Bush AJ III, Baladi GY (eds) Nondestructive testing of pavements and back calculation of modules, ASTM STP 1026. American Society for Testing and Materials, Philadelphia, pp 70–89
2. Tabatabaee N, Al-Quadi IL, Sebaaly PE (1992) Field evaluation of pavement instrumentation methods. J Test Eval 20(2):144–151
3. Raab C, Partl MN, Anderegg P, Brönnimann R (2003) Two years experience with a new long-term pavement performance monitoring station on a Swiss motorway. In: Proceedings of 3rd international symposium on maintenance and rehabilitation of pavements and technological control, 7–10 July, Minho University, Guimarães, Portugal, pp 263–271
4. Hoffman MS, Thompson MR (1982) Comparative study of selected nondestructive testing devices. Transp Res Rec 852:32–41
5. Tandon V, Nazarian S (1992) Comprehensive evaluation of five sensors used to measure pavement deflection. Transp Res Rec 1355:27–36