1. Abakoumkin, K., et al., 1992–1993. Normal gauge line monoblock sleepers made of pre-stressed concrete, NTUA/Sector of Transport & Communication Infrastructure, Athens
2. Cooperation OSE/SNCF, 1988, Comportment des traverses en relation avec les charges dynamiques, 6/1998
3. Cooperation OSE/SNCF, 1989, Programme d' essays realise au centre d' essais de la Direction de l' Equipement, 3/1989