Reference
P. J. Treloar, J. Wheeler, G. J. Potts, David C. Rex, A. J. Hurford (1993): Geochronology of the Indus Gorge and Astor Valley Sections through the Nanga Parbat Syntaxis: Constraints on Uplift History – Berichte der Geologischen Bundesanstalt – 43: 79 - 80.