    @incollection {1512,
	title = {Metrics for Accountability in the Cloud},
	booktitle = {Accountability and Security in the Cloud},
	volume = {8937},
	number = {LNCS Tutorial},
	year = {2015},
	pages = {129-153},
	author = {Carmen Fernandez-Gago and David Nu{\~n}ez}
}
