Roger Bloomfield
- Hard public access floors: A problem for the industry – Part 2. Dans: Structural Survey, v. 8, n. 3 (mars 1990). (1990):
- Retained Earth Walls used in Vriginia Highway Expansion. Dans: VSL News, v. 3, n. 1 ( 1992). (1992):
- VSL develops new architectural Retained Earth™ panels. Dans: VSL News, v. 1, n. 2 ( 1990). (1990):