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Reuther, A. U. and Urdea, P. and Geiger, C. and Ivy-Ochs, S. and Niller, H.-P. and Kubik, P. W. and Heine, Klaus (2007) Late Pleistocene glacial chronology of the Pietrele Valley, Retezat Mountains, Southern Carpathians, constrained by 10Be exposure ages and pedological investigations. Quaternary International 164/165, pp. 151-169.
Reuther, A. U. and Geiger, C. and Urdea, P. and Niller, H.-P. and Heine, Klaus (2004) Determining the glacial equilibrium line altitude (ELA) for the northern Retezat Mountains, southern Carpathians and resulting paleoclimatic implications for the last glacial cycle. Analele Universităţii de Vest din Timişoara Seria geografie 14, pp. 11-34.