@InProceedings{dn-dexa98,
	author = 	{F. Dridi and  G. Neumann},
	title = 	{Towards Access Control for Logical Document Structures},
	year = 	{1998},
	month = 	{August},
	category = 	{NM, security},
	ps = 	{http://nm.wu-wien.ac.at/research/publications/dn-dexa98.ps},
	pdf = 	{http://nm.wu-wien.ac.at/research/publications/dn-dexa98.pdf},
	booktitle = 	{Proceedings of the Ninth International Workshop on Database and Expert Systems Applications, DEXA 98},
	address = 	{Vienna, Austria},
	pages = 	{322-327},
}