Paatero J., Buyukay M., Holmén K., Hatakka J., and Viisanen Y. “Seasonal Variation and Source Areas of Airborne Lead-210 at Ny-Ålesund in the High Arctic”. Polar Research, vol. 29, no. 3, Dec. 2010, pp. 345-52, doi:10.3402/polar.v29i3.6085.