@book { DieVergtungsanpassungnach650cBGB,
    title = "Die Vergütungsanpassung nach § 650c BGB",
    author = "Wolfgang Benno {Schindler}",
    year = "2022",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b19373",
    url = "https://www.peterlang.com/document/1183324"
}