Pavement serviceability equations using the surface dynamics profilometer, /

Por Roberts, Freddy L., Hudson, W. Ronald, Texas., United States., University of Texas at Austin.
Publicado em 1970

Development of a system for high-speed measurement of pavement roughness, final report, /

Por Walker, Roger S., Hudson, W. Ronald, Roberts, Freddy L., University of Texas at Austin., Texas.
Publicado em 1971

A profile measuring, recording, and processing system, /

Por Walker, Roger S., Roberts, Freddy L., Hudson, W. Ronald, Center for Highway Research., Highway Dept.
Publicado em 1970