@conference {1990-hatzopoulos-delta,
	title = {An Object-Oriented Data Model for Hypermedia Systems},
	booktitle = {Proceedings of the DELTA Conference in Research and Development},
	year = {1990},
	month = {10},
	pages = {483{\textendash}493},
	abstract = {Hypermedia [1] is a fast growing field of research interest because of the new aspects introduced as far as it concerns the interaction between the machine and the user. The innovative features mainly refer to - the presence of various information types (multimedia environment) - the mapping of the semantic connections between information items into a flexible, efficient representation. This feature enables navigation through the information network in a meaningful way. Our effort concentrated on the definition and partial implementation of a flexible, general-purpose model through which the full capabilities of object-oriented programming can be exploited.},
	keywords = {databases},
	url = {http://cst.uop.gr/images/papers/1990-hatzopoulos-delta.pdf},
	author = {M. Hatzopoulos and D. Gouscos and M. Spiliopoulou and Costas Vassilakis and M. Vazirgiannis}
}
