Jancevska, K.; Petrushevski, G.; Bogdanoska, M.; Stafilov, T.; Ugarkovic, S. ICP-OES Elemental Impurities Study on Different Pharmaceutical Dosage Forms of Ibuprofen Using Microwave-Assisted Digestion Procedure. Maced. J. Chem. Chem. Eng. 2021, 40, 43-50.