- Unbound Granular Materials for Sub-Ballast Layers and their Mixing with Rubber Particles from Scrap Tyres,
C. Hidalgo Signes, P. MartÃnez Fernández, M.E. Garrido de la Torre and R. Insa Franco
Paper 1.24 from CCP: 110, ISBN 978-1-905088-65-2 (2016)