@article {108515,
	title = {Optimal Design of Multivariable Controller for Nonlinear Systems Using Variable Population Artificial Bee Colony Algorithm},
	journal = {WSEAS Transactions on Systems and Control},
	volume = {11},
	year = {2016},
	pages = {12-19},
	author = {Nasr A. Elkhateeb and R.I. Badr}
}
