Dr. R. Sundari, Dr. Srividya Prathiba C.S. “From Coin-Jars to QR Codes: How UPI Is Rewriting the Household Budgets of Chennai’s Middle-Class Women”. European Economic Letters (EEL), vol. 15, no. 3, Nov. 2025, pp. 3966-75, https://eelet.org.uk/index.php/journal/article/view/3903.