@conference {7661,
	title = {Optimal PID tuning based on Krill Herd optimization algorithm},
	booktitle = { The 3rd International Conference on Control, Instrumentation, and Automation},
	year = {2013},
	pages = {11 - 15},
	publisher = {IEEE},
	organization = {IEEE},
	url = {http://ieeexplore.ieee.org/document/6912801/}
}
