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2. Galos K, Nieć M, Radwanek-Bąk B, Smakowski T, Szamałek K (2012a) The mineral security of Poland – assessment of non-energy mineral resources. Bull Pol Geol Inst 452:33–42 (in Polish with English abstract)
3. Galos K, Nieć M, Radwanek-Bąk B, Smakowski T, Szamałek K (2012b) The mineral security of Poland within EU and in the world. Bull Pol Geol Inst 452:43–52 (in Polish with English abstract)
4. Galos K, Nieć M, Radwanek-Bąk B, Smakowski T, Szamałek K (2012c) The mineral security of Poland – barriers in meeting the State’s needs for non-energy minerals. Bull Pol Geol Inst 452:53–58 (in Polish with English abstract)
5. Geological and Mining Law. Act of 9th June 2011 (Dz.U.2011.163.981)