Bobaxonov Mashxurbek Maqsud ugli, “[1] Esveld, C. (2001). Modern Railway Track (2nd ed.). MRT Productions. ISBN: 978-90-800324-3-3. [2] Lichtberger, B. (2011). Track Compendium: Formation, Permanent Way, Maintenance, Economics (2nd ed.). Eurailpress (DVV Media Group). ISBN: 978-3-7771-0400”, imjrd, vol. 13, no. 4, pp. 1712–1720, Apr. 2026.