@book { VATGapinPolandPolicyProblemandPolicyResponse,
    title = "‘VAT Gap’ in Poland: Policy Problem and Policy Response",
    author = "Dominik {Gajewski}",
    year = "2024",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b21666",
    url = "https://www.peterlang.com/document/1453438"
}