@article { correia2012,
	title = {Project scheduling with flexible resources: Formulation and inequalities},
	journal = {OR Spectrum},
	volume = {34},
	number = {3},
	year = {2012},
	note = {<p>n/a</p>
},
	pages = {635-663},
	abstract = {<p>n/a</p>
},
	author = {Correia, Isabel and L{\'\i}dia Lampreia Louren{\c c}o and Francisco Saldanha-da-Gama}
}
