1[2]Guarino N.Formal Ontology and Information System[M].Trento :IOS Press1998.6-8.
2[5]Regina M.M.Braga,Marta Mattoso and Claudia M.L Werner.The Use of Mediation and Ontology Technologies for Software Component Information Retrieval[Z].ACM Software Engineering Notes.Vol 26, No.3,19-28.
