@conference{Mitt93,
	author = {Mittasch, C., Irmscher, K.},
	title = {On the Way to Competitive Market of Services in Heterogeneous Networks},
	year = {1993},
	publisher = {IFIP World Computer Congress, Hamburg 1994 - IFIP Transactions - Applications and Impacts, Volume II, Brunnstein, Raubold (Ed.), pp. 57-62}
}