@book { MusicInsideandOutsidetheSchool,
    title = "Music Inside and Outside the School",
    author = "Airi {Liimets} and Marit {Mäesalu}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107779"
}