Claudia , Heidel. 2008. "PB- and SR-Isotopes – Indicators for Mixing Processes in Mine Waters of the «Himmelfahrt Fundgrube»". Записки Горного института 174 (март), 7-9. https://pmi.spmi.ru/pmi/article/view/7467.

Claudia , Heidel. 2008. "PB- and SR-Isotopes – Indicators for Mixing Processes in Mine Waters of the «Himmelfahrt Fundgrube»". Journal of Mining Institute 174 (March), 7-9. https://pmi.spmi.ru/pmi/article/view/7467.