@book { DoTheySoundLikeBellsorLikeHowlingWolves, title = "Do They Sound Like Bells or Like Howling Wolves?", subtitle = "Interferential Diaphony in Bistritsa- An Investigation into a Multi-Part Singing Tradition in a Middle-Western Bulgarian Village", author = "Gerald Florian {Messner}", year = "2013", publisher = "Peter Lang Verlag", address = "Berlin, Germany", doi = "10.3726/978-3-653-03292-5", url = "https://www.peterlang.com/document/1046525" }