@inproceedings{Klas89a,
author = {W.~Klas AND E.J.~Neuhold AND M.~Schrefl},
booktitle = {{Visual Database Systems, Proceedings of the IFIP TC2/WG2.6 Working Conference, Tokyo, Japan, April 3--7, 1989}},
editor = {T.L.~Kunii},
pages = {433--461},
title = {{Visual Database need Data Models for Multimedia Data}},
year = {1989}
}