@article{Choi2011,
author = {Choi, S.E. and Lee, Y.J. and Lee, S.J. and Park, K.R. and Kim, J.},
title= {Age estimation using a hierarchical classifier based on global and local facial features},
year = {2011},
doi = {10.1016/j.patcog.2010.12.005},
volume = {44},
number = {6},
pages = {1262--1281},
}