Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Robert Bifulco and Helen F. Ladd,"School choice, racial segregation, and testā€score gaps: Evidence from North Carolina's charter school program*",Journal of Policy Analysis and Management,0276-8739,Wiley,2006-11-29,26,1,31-56,https://cir.nii.ac.jp/crid/1360857597364339840,https://doi.org/10.1002/pam.20226