Demographic transition and population ageing in YogyakartaMuhammad Arif Fahrudin Alfana, Rizky Laudiansyah, Navila Ulfi Fauziyanti, Mohammad Isnaini Sadali, Novia Ismayuni and Rivo MaulanaE3S Web Conf., 200 (2020) 04002DOI: https://doi.org/10.1051/e3sconf/202020004002
