Your query returned 2 results.

• FFU Synthetic Sleeper: Slim Tie and Longitudinal Baulks,
  D. Iliev, G. Simpson and G. Koller
  Paper 1.11 from CCP: 110, ISBN 978-1-905088-65-2 (2016)
  
• Fiber-Reinforced Foamed Urethane Synthetic Sleepers, Slims, Bridges and Switch Sleepers,
  G. Koller
  Paper 6.124 from CCP: 110, ISBN 978-1-905088-65-2 (2016)