Inger Wulff
(Dansk Biografisk Leksikon)
The socailed priests of the Ngadju Dy aks, 1960, Burial customs among the Yakan, 1962, The Yakan graduation ceremony, 1963, Features of Yakan culture, 1964, The Yakan rice planting ceremony, 1976, og Economic activities of the Yakan, with special reference