@article {108237,
	title = {Air Craft Winglet Design and Performance: Cant Angle Effect ,},
	journal = {Robootics and Mechanical Engineering Research},
	volume = {1},
	year = {2016},
	pages = {28-34},
	author = {Essam E. Khalil and Islam A.AbdelGhany and Osama E Abdellatif and Gamal M.ElHarriri}
}
