Fleser , Alina. 2006. Записки Горного института 167 (2), 319-21. https://pmi.spmi.ru/pmi/article/view/8037.

Fleser , Alina. 2006. "The Impact of Restructuring in the Mining Industry on the Labor in the Jiu Valley Coal Basin". Journal of Mining Institute 167 (2), 319-21. https://pmi.spmi.ru/pmi/article/view/8037.