Wu, C.Y.C.Y.WuJIAN-JIUN DING2020-06-042020-06-042018https://scholars.lib.ntu.edu.tw/handle/123456789/496976Occluded face recognition using low-rank regression with generalized gradient directionjournal article10.1016/j.patcog.2018.03.0162-s2.0-85044577724https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044577724&doi=10.1016%2fj.patcog.2018.03.016&partnerID=40&md5=bdff1dc88c426b7d793d1d9a7d868a49