@misc {IOPORT.70715440,
    author       = {Cao, Xiaochun and Shah, Mubarak},
    title        = {Camera calibration and light source estimation from images with shadows},
    howpublished = {CVPR (2), 918-923 (2005).},
    year         = {2005},
    doi          = {10.1109/CVPR.2005.95},
    identifier   = {70715440},
}