Trias-Foraminiferen von Kumaun im Himalaya [Triassic foraminifers from Kumaun, Himalaya] - 1984
Rhät-Foraminiferen aus dem Kuta-Kalk des Gurumugl-Riffes in Zentral-Papua/Neuguinea [Rhaetian foraminifers from the Kuta Limestone of the Gurumugl Reef in central Papua New Guinea] - 1990