@phdthesis{
    Seppanen06,
    author = "Seppänen, Jouni",
    school = "Helsinki University of Technology, Dissertations in Computer and Information Science, Report D12",
    title = "Using and Extending Itemsets in Data Mining: Query Approximation, Dense Itemsets, and Tiles",
    url = "http://lib.tkk.fi/Diss/2006/isbn951228202X/",
    address = "Espoo, Finland",
    year = "2006",
    owner = "MM",
    impactfactor = "G4"
}