@InBook{hyvonen-portals-2009,
  OPTkey = 	 {},
  author = 	 {Eero Hyvönen},
  title = 	 {Semantic Portals for Cultural Heritage},
  booktitle = {Handbook on Ontologies (2nd Edition)},
  editor = {Steffen Staab and Rudi Studer},
  publisher = {Springer-Verlag},
  OPThowpublished = {},
  month = 	 {April},
  abstract = {},
  year = 	 {2009},
  note = 	 {},
  OPTproject = {http://www.seco.tkk.fi/projects/finnonto/, http://www.seco.tkk.fi/applications/kulttuurisampo/},
  OPTannote = 	 {semantic web}
}