@article{Agresti1998,
author = {Agresti, A.  and Coull, B. },
title= {Approximate is better than ‘exact’ for interval estimation of binomial proportions},
year = {1998},
doi = {10.1080/00031305.1998.10480550},
journal = {The American Statistician },
volume = {52},
number = {2},
pages = {119--126},
}