@article{article8856fe85,
title   = {An improved estimate of leaf area index based on the histogram analysis of hemispherical photographs},
author = {Negrón Juárez, Robinson I and Rocha , Humberto Ribeiro da and Figueira, Adelaine Michela Silva e and Goulden, Michael L and Miller, Scott D},
year = {2009},
doi = {10.1016/j.agrformet.2008.11.012},
journal   = {Agricultural and Forest Meteorology}
}