@book{12664,
	author = {Conference of "European Cooperation in Informatics", Munich, Oct. 20-22, 1981 and Duijvestijn, A. J. W. ; ed.},
	title = {Trends in information processing systems; proceedings of the 3rd conf.},
	publisher = {Springer-Verlag},
	year = {1981},
	address = {Berlin}
}