Bačvica (f)
Brest.
Širola, Božidar: Sviraljke s udarnim jezičkom [Aerophones with a beating tongue]. Zagreb, 1937, p.125, 126, 157 [NOT in index!].
Gojković, Andrijana: Narodni muzički instrumenti [Folk musical instruments]. Beograd, 1979 (»Širola [129]).