@book { GustavMahlerVisionaryandDespot,
    title = "Gustav Mahler. Visionary and Despot",
    author = "Constantin {Floros}",
    year = "2012",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-01735-9",
    url = "https://www.peterlang.com/document/1046099"
}