Łodziński, Marek. ““Euro-Mineral” and ‘Euro-Gem’ 2010 in Sainte Marie Aux Mines, Alsace, France – Perfectly Prepared Geotouristic Product for Everyone”. Geotourism/Geoturystyka, no. 22-23: 75. Accessed November 28, 2024. https://journals.agh.edu.pl/geotour/article/view/647.