@article{McEwan2008,
author = {McEwan, P.J. and Shapiro, J.S.},
title= {The benefits of delayed primary school enrollment: Discontinuity estimates using exact birth dates},
year = {2008},
doi = {10.3368/jhr.43.1.1},
journal = {Journal of Human Resources},
volume = {43},
number = {1},
pages = {1--29},
}