M. Taseska, P. Makreski, V. Stibilj, R. Jaćimović, T. Stafilov, and G. Jovanovski, “Determination of trace elements in chalcopyrite (CuFeS₂) by k₀-instrumental neutron activation analysis after matrix elements removal”, Maced. J. Chem. Chem. Eng., vol. 27, no. 2, pp. 141–147, Dec. 2008.