ParkJI, HoaglandTM, ParkMS. Anatomy of the corrugator supercilii muscle. Arch Facial Plast Surg. 2003; 5:412-415. http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?db=m&form=6&Dopt=r&uid=entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=12975140&dopt=Abstract
2.
EllisDAF, BakalaCD. Anatomy of the motor innervation of the corrugator supercilii muscle: clinical significance and development of a new surgical technique for frowning. J Otolaryngol. 1998;27:222. http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?db=m&form=6&Dopt=r&uid=entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9711518&dopt=Abstract