См.: K. Bischoff and S. F. Reardon, «Growth in the Residential Segregation of Families by Income, 1970–2009», November 2011, доступно по ссылке: https://cepa.stanford.edu/sites/default/files/RussellSageIncomeSegregationreport.pdf; и Sean F. Reardon and Kendra Bischoff, «Income Inequalityand Income Segregation»,American Journal of Sociology 116, no. 4 (January 2011): 1092—53.