Gillespie, T. D. Calibration of response-type road roughness measuring systems / T.D. Gillespie, M.W. Sayers, and L. Segel. - Washington, D.C. : Transportation Research Board, National Research Council, 1980. - 81 p. : ill. ; 28 cm. - Report, . ISBN: 030903034X (pbk.) : Subjects--Topical Terms: MCEPavements--Testing.Road meters--Calibration.Roads--Riding qualities--Testing. Dewey Class. No.: 625.8 / GIL