Umar Ali Khan, Vipin Jain 2026. Monetary Modernization and Sustainable Currency Innovation: The Future of Banknotes in the Era of Digital Transformation under Oman’s Vision 2040. European Economic Letters (EEL). 16, 1 (Feb. 2026), 1141–1150. DOI:https://doi.org/10.52783/eel.v16i1.4246.