- Ferdinand J. de Hen
(1) Set of whistles of the Boa people of the northern Democratic Republic of the Congo (DRC). Typically seven or nine cylindrical stopped pipes are threaded on cord or wire. Other names reported are gude and moleno.
(2) Wooden cylindrical whistle of the Makere of the DRC.J.S. Laurenty: Systématique des aérophones de l’Afrique centrale...