Adam Farquhar Richard Fikes James Rice The Ontolingua Server: a tool for collaborative ontology construction. 707-727 1997 46 Int. J. Hum.-Comput. Stud. 6 http://dx.doi.org/10.1006/ijhc.1996.0121 db/journals/ijmms/ijmms46.html#FarquharFR97