TY  - BOOK
AU  - Gillespie, T.D.
AU  - Sayers, M.W., coaut.Segel, L., coaut.
ED  - National Research Council. Transportation Research Board (E-.U.A.)
TI  - Calibration of response-type road roughness measuring syste-ms / T.D. Gillespie , M.W. Sayers , and L. Segel
CY  - Washington, D.C. : TRB
ER  -