Unknown Author
Howard Robert Voorhees
J. O. Izatt
American Association of State Highway and Transportation Officials
Steve Beckett
Hugh A. Wallace
R. B. Brownie
Asphalt Institute
Asphaltstrassentagung (1995 Hildesheim, Germany)
Alfred F. Grimaldi
David G. Tunnicliff
National Research Council (U.S.). Transportation Research Board
ARE Inc.