Stan Z. Li Long Zhu ZhenQiu Zhang Andrew Blake HongJiang Zhang Harry Shum Statistical Learning of Multi-view Face Detection. 67-81 2002 conf/eccv/2002-4 ECCV (4) http://link.springer.de/link/service/series/0558/bibs/2353/23530067.htm db/conf/eccv/eccv2002-4.html#LiZZBZS02