@article{article2534dffd,
title   = {Principal component analysis applied to feature-oriented band ratios of hyperspectral data: a tool vegetation studies},
author = {Almeida, Teodoro Isnard Ribeiro de and Souza Filho, Carlos Roberto de},
year = {2004},
doi = {10.1080/01431160412331270812},
journal   = {International Journal of Remote Sensing}
}