@book { IntegrationakquirierterUnternehmenindenneuenBundeslndern,
    title = "Integration akquirierter Unternehmen in den neuen Bundesländern",
    author = "Ingo {Hartmann}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1093690"
}