@article {hare2013survey,
	title = {A survey of non-gradient optimization methods in structural engineering},
	journal = {Advances in Engineering Software},
	volume = {59},
	year = {2013},
	pages = {19{\textendash}28},
	publisher = {Elsevier},
	author = {Hare, Warren and Nutini, Julie and Tesfamariam, Solomon}
}
