1. Cervical plexus block;Wertheim;N Y State J Med,1939
2. Interscalene cervical plexus block: A single-injection technique;Winnie;Anesth Analg,1975
3. Blocks of cervical spinal nerves;Collins,1960
4. Uber Leitunganasthesie am Bauch, Brust, Arm, und Hals durch Injection ans Foramen intervertebrale;Kappis;Munchen Med Wschr,1912
5. Operations on the neck;Heidenhein,1914