Pratico, Filippo Giammaria, and Marinella Giunta. “LCC-Based Appraisal of Ballasted and Slab Tracks: Limits and Potential”. The Baltic Journal of Road and Bridge Engineering, vol. 13, no. 4, Dec. 2018, pp. 475-99, https://doi.org/10.7250/bjrbe.2018-13.429.