@book { DeclarativeLogicProgrammingComponentsforInformationAgents,
    title = "Declarative Logic-Programming Components for Information Agents",
    author = "Michael {Fink}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832462529",
    url = "https://m.diplom.de/document/221472"
}