Cristina Cachero Jaime Gómez Oscar Pastor Conceptual Design of Electronic Product Catalogs Using Object-Oriented Hypermedia Modeling Techniques. 19-30 http://dx.doi.org/10.1007/3-540-45394-6_3 2000 conf/er/2000w ER (Workshops) db/conf/er/erw2000.html#CacheroGP00