“INFLUENCE OF Ho3+ IONS FOR THE QUANTITATION OF IRON (Fe) IN 0.1 M HCl SOLUTION USING MICROWAVE PLASMA-ATOMIC EMISSION SPECTROMETRY (MP-AES)”, MaFE, vol. 44, no. 3, p. 109, Oct. 2019, doi: 10.7494/mafe.2018.44.3.109.