ALICIA DE LOS SANTOS PINEDA2026-01-292026-01-29201810.1016/j.trb.2018.09.0132-s2.0-85054232640https://www.scopus.com/inward/record.uri?eid=2-s2.https://ucocris.uco.es/handle/123456789/29623Civil and Structural EngineeringTransportationThe Railway Rapid Transit frequency setting problem with speed-dependent operation costsresearch article