R. Natvig

Oromos, Slaves, and the Zar Spirits: A Contribution to the History of the Zar Cult

R. Natvig, 1987 .

Umm al-Ghulam: Zār Spirit or Half-forgotten Saint? Making Sense of an Egyptian Zār Song

R. Natvig, 2013 .

Arabic Writings on Zar

R. Natvig, 1998 .

Hydraulic Fracturing of the Frontier Zone in West-Central Wyoming A Case History

L. V. Lehman, R. Natvig, J. Yaritz, 1998 .