@inproceedings {ND.5.Eliassen.1988.e,
	title = {Aspects of Transaction Modelling},
	journal = {Proceedings EUTECO{\textquoteright}88},
	year = {1988},
	pages = {1051-1067},
	type = {1},
	address = {Vienna, Austria,},
	author = {Eliassen, Frank and Veijalainen, J. and Tirri, H.},
	editor = {Speth, R.}
}
@inproceedings {ND.5.Eliassen.1988.b,
	title = {A Functional Approach to Information System Interoperability},
	journal = {Proceedings EUTECO{\textquoteright}88},
	year = {1988},
	pages = {1121-1135},
	type = {1},
	address = {Vienna, Austria,},
	author = {Eliassen, Frank and Veijalainen, J.},
	editor = {Speth, R.}
}
