Mena, Carlos, Yony Ormazabal, Eduardo Fuentes, and Iván Palomo. “Impacts of Physical Environment Perception on the Frailty Condition in Older People”. Geospatial Health 15, no. 1 (June 18, 2020). Accessed April 26, 2024. https://www.geospatialhealth.net/gh/article/view/888.