Larionov A. N., Tebenkov A. M., and Gee D. G. “Pb-Pb Single-Zircon Single Grain Ages of Granitoid Boulders from the Vendian Tillite of Wahlenbergfjorden, Nordaustlandet, Svalbard”. Polar Research, vol. 17, no. 1, Jan. 1998, pp. 71-80, doi:10.3402/polar.v17i1.6608.