P. Schiessling

A 14C Calibration with AMS from 3500 to 3000 BC, Derived from A New High-Elevation Stone-Pine Tree-Ring Chronology

W. Kutschera, P. Steier, K. Nicolussi, 2004, Radiocarbon.

A 9111 year long conifer tree-ring chronology for the European Alps: a base for environmental and climatic investigations

J. van der Plicht, V. Plicht, T. Melvin, 2009 .