Enrique H. Ruspini Robert Fraley ID: An Intelligent Information Dictionary System. 367-376 1983 ER db/conf/er/er83.html#RuspiniF83 conf/er/83 db/conf/er/RuspiniF83.html er83/ER83-P367.pdf journals/ibmsj/Uhrowczik73 ... ... ... conf/ifip/Langefors74 ... ... ... ...