@article{Filmer2001,
author = {Filmer, D. and Pritchett, L. },
title= {Estimating Wealth Effects without Expenditure Data—or Tears: An Application to Educational Enrollments in States of India},
year = {2001},
doi = {10.2307/3088292},
journal = {Demography},
volume = {38},
pages = {115--132},
}