@article {varoutas2009service,
	title = {Service cost model and cost comparative studies},
	journal = {info},
	volume = {11},
	number = {3},
	year = {2009},
	pages = {19{\textendash}30},
	publisher = {Emerald Group Publishing Limited},
	author = {Varoutas, Dimitris and H{\"a}mm{\"a}inen, Heikki and Welling, Ilari and Mas Machuca, Carmen and Moe, {\O}yvind and Ebersp{\"a}cher, Joerg and Jaeger, Monika and Gladisch, Andreas}
}
