@book { PyotrIlyichTchaikovsky,
    title = "Pyotr Ilyich Tchaikovsky",
    author = "Constantin {Floros}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13244",
    url = "https://www.peterlang.com/document/1068064"
}