@article {tsilipanos2015modeling,
	title = {Modeling Complex Telecom Investments: A System of Systems Approach},
	journal = {Engineering Management, IEEE Transactions on},
	volume = {62},
	number = {4},
	year = {2015},
	pages = {631{\textendash}642},
	publisher = {IEEE},
	author = {Tsilipanos, Kosmas and Neokosmidis, Ioannis and Varoutas, Dimitris}
}
