@article {28013,
	title = {Construction contract management using value packaging systems},
	journal = {International Journal of Construction Management},
	volume = {17},
	year = {2017},
	pages = {50-64},
	url = {https://doi.org/10.1080/15623599.2016.1167369},
	author = {Mahdi Safa and Arash Shahi and Carl T Haas and Keith W Hipel}
}