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 [Internet]. 2026 Apr. 22 [cited 2026 Apr. 27];13(4):1712-20. Available from: https://ijmrd.in/index.php/imjrd/article/view/5912