Virich, V. D., Yu. V. Gorbenko, G. P. Kovtun, S. S. Nagorny, T. S. Potina, D. A. Solopikhin, and A. P. Shcherban’. 2017. “Refining Ancient Lead by Vacuum Distillation”. East European Journal of Physics 3 (4), 60-65. https://doi.org/10.26565/2312-4334-2016-4-06.