Balašov J. A., Teben’kov A. M., Ohta Y., Larionov A. N., Sirotkin A. N., Gannibal L. F., and Ryungenen G. I. “Grenvillian U-Pb Zircon Ages of Quartz Porphyry and Rhyolite Clasts in a Metaconglomerate at Vimsodden, Southwestern Spitsbergen”. Polar Research, vol. 14, no. 3, Jan. 1995, pp. 291-02, doi:10.3402/polar.v14i3.6669.