1. Hudaib M, Speroni E, Di Pietra AM, Cavrini V: GC/MS evaluation of thyme (Thymus vulgaris L.) oil composition and variations during the vegetative cycle. J Pharm Biomed Anal. 2002 Jul 20;29(4):691-700. doi: 10.1016/s0731-7085(02)00119-x. [PubMed:12093498 ]