1. Batdorff , M. Maloney , L. May , J.F. Speakman , S. Wolf , P.J. Cheng , A. 2014 Charter school funding: Inequity expands Fayetteville University of Arkansas http://www.uaedreform.org/wp-content/uploads/charter-funding-inequity-expands.pdf
2. Brown v. Board of Education of Topeka 1954 https://supreme.justia.com/cases/federal/us/347/483/case.html#493
3. Vouchers and students with disabilities;Etscheidt;Journal of Disability Policy Studies,2005