1. Pouzeratte Y, Delay JM, Brunat G, et al. Patient-controlled epidural analgesia after abdominal surgery: ropivacaine versus bupivacaine. Anesth Analg. 2001;93:1587–92.
2. Stoelting RK. Pharmacology and physiology in anesthetic practice. 3rd ed. Philadelphia: Lippincott-Raven; 1999. p. 158–81.
3. McGee DL. Local and topical anesthesia. In: Roberts JR, Hedges JR, editors. Clinical procedures in emergency medicine. 5th ed. Philadelphia: Saunders Elsevier; 2010. p. 481.
4. Achar S, Kundu S. Principles of office anesthesia: part I. Infiltrative anesthesia. Am Fam Physician. 2002;66(1):91–4.
5. Morgan GE Jr., Mikhail MS, Murray MJ. Chapter 14. Local anesthetics. In: Morgan GE Jr., Mikhail MS, Murray MJ, editors. Clinical anesthesiology. 4th ed. New York: McGraw-Hill; 2006.
http://www.accessmedicine.com/content.aspx?aID=887357
. Accessed 27 Jan 2012.