G. Bradfield
- Determining the thickness of concrete pavements by mechanical waves: directed-beam method. Dans: Magazine of Concrete Research, v. 16, n. 46 (mars 1964). (1964):
- Determining the thickness of concrete pavements by mechanical waves: diverging-beam method. Dans: Magazine of Concrete Research, v. 16, n. 46 (mars 1964). (1964):