Alfred F. Grimaldi
James Ray Lundy
Unknown Author
W. J. Dibdin
Asphalt Institute.
Leslie Myers McCarthy
Louisiana. Dept. of Highways. Testing and Research Section.
Chris A. Bell
M. E. Daines
George Huntington Clark
T. Hugh Boorman
Joseph A. Zenewitz
Gordon Beecroft
Cliff Nicholls
J. C. Nicholls
Douglas Bruce Smith
Boris Radovskiy