Másodiklyuk (-)
Counting the Bolhalyuk as the 1st; Palóc (county Nógrád); NB: ➺ homonym (3rd fingerhole [sic]).
Sárosi, Bálint: Die Volksmusikinstrumente Ungarns (Handbuch der europ. Volksmusikinstr. 1/1). Leipzig, s.a. [1967], p.86.