@article{Klas90a,
author = {W.~Klas AND E.J.~Neuhold AND M.~Schrefl},
journal = {{Computer Communications, Special Issue on Multimedia Systems}},
number = {4},
pages = {204--215},
title = {{Using an Object-Oriented Approach to Model Multimedia Data}},
volume = {13},
year = {1990}
}