Mahnaz Khanavi, Abbas Hadjiakhoondi, Gholamreza Amin, Yaghoob Amanzadeh, Abdolhossein Rustaiyan, and Abbas Shafiee, « Comparison of the Volatile Composition of Stachys persica Gmel. and Stachys byzantina C. Koch. Oils Obtained by Hydrodistillation and Steam Distillation », Z Naturforsch C., vol. 59, nos 7-8, (lire en ligne)