Hildebrand, P., Noble, S., Searle, M., Waters, D., & Parrish, R. (2001). Old origin for an active mountain range: Geology and geochronology of the eastern Hindu Kush, Pakistan.

Hildebrand, P., SR Noble, M. Searle, D. Waters, and R. Parrish. Old Origin for an Active Mountain Range: Geology and Geochronology of the Eastern Hindu Kush, Pakistan. 2001.

Hildebrand, P., et al. Old Origin for an Active Mountain Range: Geology and Geochronology of the Eastern Hindu Kush, Pakistan. 2001.