@book { IndianRailwaysJourneywithCoal18552023,
    title = "Indian Railways' Journey with Coal 1855-2023",
    subtitle = "Changing Policies and Outcomes",
    author = "Ashim Kumar {Maitra}",
    year = "2025",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    url = "https://www.peterlang.com/document/1465901"
}