| 1. | ACHIMOVIČOVÁ Marcela, BALÁ® Peter, BRIANČIN Jaroslav: The influence of mechanical activation of chalcopyrite on the selective leaching of copper by sulphuric acid. In Metalurgija, Vol. 45 (2006), s. 9-12 |
| 2. | ACHIMOVIČOVÁ Marcela, BALÁ® Peter: Alkaline leaching of mechanically activated berthierite and boulangerite. In Acta Montanistica Slovaca, Vol. 11, Special issue 2/2006. s. 274-279 |