@article{Mian1991,
author = {Mian, I.U.H. and Shoukri, M.M. and Tracy, D.S.},
title= {Maximum likelihood estimation of sibling correlations in the analysis of family data},
year = {1991},
doi = {10.1016/0378-3758(91)90086-T},
volume = {27},
number = {1},
pages = {125--141},
}