"Elefteriadou, L., Li, Z., Chrysikopoulos, G., Lu, C., Jin, L. and Ryus, P. (2010).
Travel time reliability implementation for the freeway strategic intermodal system.
The Florida Department of Transportation, Flrorida, USA. https://happylibnet.com/doc/2824507/travel-time-reliability-as-a-performance-measure-."