Talebi, S.M. et al. 2019. Effect of altitude on essential oil composition and on glandular trichome density in three "Nepeta" species ("N. sessilifolia", "N. heliotropifolia" and "N. fissa"). Mediterranean Botany. 40, 1 (Jan. 2019), 81–93. DOI:https://doi.org/10.5209/MBOT.59730.