JORDANOV, Saško; MULEV, Milto; MELOVSKI, Ljupčo; DERLIEVA, Lidija. Carotenoids in the needles of Pinus nigra as bioindicators of the degree of pollution in the Atmospheric air of Skopje. Macedonian Journal of Ecology and Environment, [S. l.], v. 5, n. 2, p. 85–91, 1997. Disponível em: http://mjee.org.mk/index.php/mjee/article/view/51. Acesso em: 4 nov. 2026.