@phdthesis{
    Oikarinen2008,
    author = "Oikarinen, Emilia",
    publisher = "Helsinki University of Technology, Faculty of Information and Natural Sciences, Department of Information and Computer Science. TKK-ICS-D7",
    title = "Modularity in Answer Set Programs. Doctoral Dissertation",
    url = "http://lib.tkk.fi/Diss/2008/isbn9789512295821/",
    address = "Espoo",
    year = "2008",
    owner = "MM",
    impactfactor = "O1"
}