@phdthesis{1999-Thesis-ContentbasedRetrievalOnAMedicalImageDatabase,
   author = {Hu, J.},
   title = {Content-based Retrieval on a Medical Image Database},
   university = {Northwestern University},
   type = {Master Thesis},
   PDF = {http://www.drhu.eu/publications/1999-Thesis-ContentbasedRetrievalOnAMedicalImageDatabase.pdf},
   year = {1999}
}