1. Institute of Organic Technology, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University, Rudjer Boskovic 16, 1000 Skopje, Macedonia, the Former Yugoslav Republic of
2. Institute of Applied Chemistry and Pharmaceutical Analyses, Faculty of Pharmacy, Ss. Cyril and Methodius University, Majka Tereza 47, Skopje, Macedonia, the Former Yugoslav Republic of
3. Institute of Organic Technology, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University, Rudjer Boskovic 16, 1000, Skopje, Macedonia, the Former Yugoslav Republic of