NEW ZINC OXALATO AND HYDROGENOXALATO COMPLEXES: SYNTHESIS AND INFRARED STUDY. Journal of Engineering Studies and Research, [S. l.], v. 23, n. 3, p. 32–35, 2017. DOI: 10.29081/jesr.v23i3.78. Disponível em: https://jesr.ub.ro/journal/article/view/78. Acesso em: 13 sep. 2025.