Towards the study of the efficiency using of locomotives of electrical traction on the Kokand - Andizhan section of the Kokand branch of the railwayOleg Ablyalimov, Altynbek Lesov, Zukhritdin Ergashev and Natalya SarvirovaE3S Web Conf., 694 (2026) 04015DOI: https://doi.org/10.1051/e3sconf/202669404015