@article{Aghevli1981,
author = {Aghevli, B.B. and Mehran, F.},
title= {Optimal grouping of income distribution data},
year = {1981},
doi = {10.2307/2287035},
journal = {Journal of the American Statistical Association},
volume = {76},
number = {373},
pages = {22--26},
}