1. López Pita A. Alta Velocidad en el Ferrocarril. Ediciones UPC, Universidad Politécnica de Cataluña, Barcelona; 2010.
2. Witt S. The influence of under sleeper pads on railway track dynamics. In: Proceedings of Linköping University, Department of Management and Engineering, Division of Solid Mechanics, Sweden; 2008.
3. Stress distribution in the permanent way due to heavy axle loads and high speeds;Eisenmann;Proc AREA,1970
4. Prud’Homme A. Forces and behaviour of railroad tracks at very high train speeds. Standards adopted by SNCF for its future high speed lines (250–300km/h). In: Proc Symp Rail Track Mech Tech. New Yersey: Princeton University; 1978. p. 79–108.
5. Hunt GA. Eurobalt optimises ballasted track. Railway gazette international, December 2000. p. 813–6.