@conference {39536,
	title = {New Global Update Mechanism of Ant Colony System for Retinal Vessel Segmentation,},
	booktitle = {13th IEEE International Conference on Hybrid Intelligent Systems |(HIS13) Tunisia, 4-6 Dec. pp. 222-228,  2013},
	year = {2013},
	month = { 4-6 Dec},
	address = { Tunisia, },
	author = {Ahmed Hamza Asad and Eid Elamry, and Aboul Ella Hassanien and Mohamed  Tolba}
}
