1. Self-Organizing Maps and the US Urban Spatial Structure;Arribas-Bel Daniel;EPB,2013
2. REGAL
3. U.S. Census Bureau. 2019. TIGER/Line Shapefile 2016 Series Information for the Current Census Tract State-based Shapefile. https://catalog.data.gov/dataset/tiger-line-shapefile-2016-series-information-for-the-current-census-tract-state-based-shapefile. U.S. Census Bureau. 2019. TIGER/Line Shapefile 2016 Series Information for the Current Census Tract State-based Shapefile. https://catalog.data.gov/dataset/tiger-line-shapefile-2016-series-information-for-the-current-census-tract-state-based-shapefile.
4. U.S. Census Bureau. 2021. About the American Community Survey. https://www.census.gov/programs-surveys/acs/about.html. U.S. Census Bureau. 2021. About the American Community Survey. https://www.census.gov/programs-surveys/acs/about.html.
5. U.S. Census Bureau. 2021. ACS Data Stories-Stats in Action! https://www.census.gov/programs-surveys/acs/about/acs-data-stories.html. U.S. Census Bureau. 2021. ACS Data Stories-Stats in Action! https://www.census.gov/programs-surveys/acs/about/acs-data-stories.html.