@proceedings{Houben,
	title           = {Proceedings of the 26th ACM Conference on Hypertext and Social Media},
	year            = {2015},
	month           = {September},
	editor          = {Y. Yesilada and R. Farzan and G.J. Houben},
	publisher       = {ACM},
	isbn            = {978-1-4503-3395-5},
	location        = {Cyprus, Guzelyurt},
	group           = {WIS}
}