id: 70636899 dt: a an: 70636899 au: Soyel, Hamit; Demirel, Hasan ti: Improved SIFT matching for pose robust facial expression recognition so: FG, 585-590 (2011). py: 2011 pu: la: EN cc: ut: ci: li: doi:10.1109/FG.2011.5771463