@book { GeneralReferenceClausesintheJudicialProcess,
    title = "General Reference Clauses in the Judicial Process",
    author = "Leszek {Leszczyński}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b18767",
    url = "https://www.peterlang.com/document/1062358"
}