@INPROCEEDINGS {7709,
author={F. M. Janeiro and F. Wagner and P. M. Ramos and A. M. Silva},
doi={},
booktitle={IMEKO World Congress},
title={CLOUD BASE HEIGHT ESTIMATION USING A LOW-COST DIGITAL CAMERA},
year={2009},
month={September},
volume={1},
pages={2270-2273} 
}