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  • 1. Maerschalk G., Oertelt S.: Anforderungen an die Erhaltung von Radwegen. 2014.

  • 2. Sayers M.W., Karamihas S.M.: The little book of profiling: basic information about measuring and interpreting road profiles. 1998.

  • 3. Sayers M.W.: Guidelines for conducting and calibrating road roughness measurements. 1986.

  • 4. Godlewski D., Szpinek S.: Równość nierówności drogi, czyli co warto (po)wiedzieć o IRI. „Drogownictwo”, 54 (1-2)/2016.

  • 5. Sayers M.W.: On the calculation of international roughness index from longitudinal road profile. „Transportation Research Record”, 1501/1995.

  • 6. Opara K., Zieliński J., Brzeziński K., Kaczmarek-Majer K., Bukowicki M.: Evaluation of pavement roughness through vehicle vibration monitoring. Proceedings of 26th PIARC World Road Congress: Connecting Cultures – Enabling Economies, 2019.