1 Gorski,M.B, "The Implication of the International Road Roughness Experiment for Belgium"
2 Wilian D.D.Paterson, "International Roughness Index : Relationship to other measures of roughness and riding quality"
3 R.Ul-Islam, "A Preliminary Calibration Exercise of HDM-4’s Road User Effect Relationships for Japanese Conditions"
1 Gorski,M.B, "The Implication of the International Road Roughness Experiment for Belgium"
2 Wilian D.D.Paterson, "International Roughness Index : Relationship to other measures of roughness and riding quality"
3 R.Ul-Islam, "A Preliminary Calibration Exercise of HDM-4’s Road User Effect Relationships for Japanese Conditions"