@techreport{ontoweb-d1-3,
  author = {Gomez-Perez, Asun and Angele, Juergen and Fernandez-Lopez, Mariano and Christophides, V. and Stutt, Athur and Sure, York},
  institution = {Universidad Politecnia de Madrid},
  interhash = {3997c12a935e1cb38a6a2c338d8eb593},
  intrahash = {f45f3564641324075528aa64401685be},
  location = {Madrid},
  number = {1.3},
  title = {A survey on ontology tools},
  type = {OntoWeb deliverable},
  url = {http://www.aifb.uni-karlsruhe.de/WBS/ysu/publications/OntoWeb_Del_1-3.pdf},
  year = 2002
}