Cheng , A., C. Craddock, and G. Zhu. “Kyanite in Upper Proterozoic Quartzite Near Veslebukta, Wedel Jarlsberg Land, Western Spitsbergen”. Polar Research, vol. 7, no. 2, Jan. 1989, pp. 147-8, doi:10.3402/polar.v7i2.6839.