Villegas Yarleque, M., F. Carrasco Choque, R. Hidalgo Armestar, and G. F. Villegas Aguilar. “Catastrophic Health Expenditure: The Case of Households With Adults over 60 Years of Age in Peru – 2019”. Universidad Ciencia Y Tecnología, Vol. 25, no. 111, Dec. 2021, pp. 191-00, doi:10.47460/uct.v25i111.530.