@inproceedings{mci/Bergholtz2001,
author = {Bergholtz, Maria AND Johannesson, Paul},
title = {Classifying the semantics of relationships in conceptual modeling by categorization of roles},
booktitle = {Applications of Natural Language to Information Systems, 6th international workshop NLDB'01},
year = {2001},
editor = {Moreno, Ana Maria AND Van De Riet, Reind P.} ,
pages = { 199-203 },
publisher = {Gesellschaft für Informatik e. V.},
address = {Bonn}
}