Ohta , Y., A. N. Larionov, A. M. Tebenkov, C. Lepvrier, H. Maluski, M. Lange, and B. Hellebrandt. “Single-Zircon Pb-Evaporation and 40Ar/39Ar Dating of the Metamorphic and Granitic Rocks in North-West Spitsbergen”. Polar Research, vol. 21, no. 1, Jan. 2002, pp. 73-89, doi:10.3402/polar.v21i1.6475.