@article {28142,
	title = {Financially sustainable management strategies for urban wastewater collection infrastructure\–development of a system dynamics model},
	journal = {Tunnelling and Underground Space Technology},
	volume = {39},
	year = {2014},
	pages = {116-129},
	url = {https://doi.org/10.1016/j.tust.2012.12.003},
	author = {Rashid Rehan and Mark A Knight and Andreh JA Unger and Carl T Haas}
}