%0 Journal Article %A Ahmed, F. %A Kabir, M. H. %T Facial expression recognition under difficult conditions: A comprehensive study on edge directional texture patterns %J International Journal of Applied Mathematics and Computer Science %D 2018 %P 399-409 %V 28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2018_28_2_a13/ %G en %F IJAMCS_2018_28_2_a13