1. Jujan C., Svoboda T., Petrila Mine 150 years of activity in industrial mining (in Romanian) (Grafica-Plus PH, Deva, 2009)
2. Fodor D., Baican G., The impact of mining industry on the environment (in Romanian) (Infomin PH, Deva, 2001)
3. Documentation Hunedoara Energy Complex (2005-2014)
4. Google Earth Pro. Available on https://www.google.com/intl/ro/earth/versions/
5. Duncan C.W., Christopher W.M., Rock Slope Engineering. Civil and mining, 4th edition (Spon Press - Taylor & Francis Group, New York, 2005)