@book { SavaMrkaljalsReformatorderserbischenKyrilliza,
    title = "Sava Mrkalj als Reformator der serbischen Kyrilliza",
    author = "Miloš {Okuka}",
    year = "1975",
    publisher = "Biblion",
    address = ", Germany",
    doi = "10.3726/b12508",
    url = "https://www.peterlang.com/document/1066969"
}