found: Work cat.: Bauckholt, C. Schlammflocke, 2010:prefatory material (Nasenflöte)
found: Grove music online, April 21, 2017(Nose flute; Any kind of flute, tubular or vessel, side- or end-blown, which is sounded by nasal breath. Such flutes have a very wide distribution, but are particularly common in the Pacific Islands and South-east Asia)
found: Sachs, C. History of musical instruments, 2012:page 46 (Nose flutes, blown through the nostril instead of the mouth, occur in all five continents and even Bavaria. Form and type do not matter; there are tubular and globular nose flutes as well as cross and vertical nose flutes)