Asian Development Bank. (2026). India economy profile. https://kidb.adb.org/economies/india
Altan, M. F., & Kızıltaş, M. Ç. (2020). Comparative evaluation of development, existing case and investment plans on high-speed railways in national, regional and international scale. Dicle University Journal of Engineering, 11(2), 715–722.
Altan, M. F., Kızıltaş, M. Ç., & Ayözen, Y. (2020). A review of development trends on railways, existing case on global scale of high-speed railways and Turkey. Dicle University Journal of Engineering, 11(3), 1261–1268.
Givoni, M. (2006). Development and impact of the modern high-speed train: A review. Transport Reviews, 26(5), 593–611. https://doi.org/10.1080/01441640600589319
Insamer India Report. (2025). India report.
Kızıltaş, M. Ç. (2020). High-speed railways: Study of impact on production and economic development. BEU Journal of Scientific Sciences, 9(4), 1844–1853.
OECD. (2025). OECD data and statistics.
OECD. (2020). India city populations.
Sánchez-Borrás, M., Nash, C., Abrantes, P., & López-Pita, A. (2010). Rail access charges and the competitiveness of high-speed trains. Transport Policy, 17(2), 102–109. https://doi.org/10.1016/j.tranpol.2009.11.001
Trading Economics. (2026). India indicators. https://tradingeconomics.com/india/indicators
World Atlas. (2025). World Atlas.