1. [1] Thripathi KD. Essentials of Medical Pharmacology. 5th edn. Jaypee Brothers Medical Publishers, India 2004.
2. Pharmacology of local anaesthetic agents;Covino;British Journal of Anesthesia,1986
3. [3] Kapral S, Krafft P, Gosch M, et al. Ultrasound imaging for stellate ganglion block: direct visualization of puncture site and local anesthetic spread: a pilot study. Regional Anesthesia 1995;20(4):323-8.
4. [4] Butterworth JF, David MC, Wasnick JD. Clinical Anesthesiology. 5th edn. New York: Lange Medical Books/McGraw-Hill Medical Publishing Division 2013: p. 985-7.
5. [5] Chaurasia BD. Human Anatomy. 4th edn. 2004: p. 194.