BRŮHA, Jan, IONASCU, D., JEONG, Byeongju. Organized labor and restructuring coal mines in the Czech Republic and Romania. CERGE-EI Working Paper Series. 2004, -(228), 1-27. ISSN 1211-3298. Dostupné z: http://www.cerge-ei.cz/pdf/wp/Wp228.pdf