LYUBOMIROVA, V.; BELOVEZHDOVA, I.; KAMUSHEVA, A.; IGNATOV, P.; TUHCHIEV, P. Optimization of Solid-phase Extraction and GC-MS/MS Determination of PAHs in Bulgarian Sewage Sludge. Proceedings of the Bulgarian Academy of Sciences, Sofia, Bulgaria, v. 79, n. 3, p. 312–320, 2026. DOI: 10.7546/CRABS.2026.03.04. Disponível em: https://www.proceedings.bas.bg/index.php/cr/article/view/941. Acesso em: 17 may. 2026.