J. L. Clarke
P. Faessel
Edward W. Brand
DOE and CIRIA Piling Seminar (1976 Institution of Civil Engineers)
M. O'Neill
Michael Bozozuk
Unknown Author
V. I. Krutov
Doboku Kenkyūjo (Japan). Kōzōbutsu Kenkyū Gurūpu. Kiso Chīmu
Shu-t'ien Li
Bohui Wang
Bengt Baltzar Broms
Corrugated Concrete Pile Co., New York.
William J. Quinn