1. Goodman, Gilman's The Pharmacological Basis of Therapeutics;Hardman,1996
2. Goodman and Gilman's The Pharmacological Basis of Therapeutics;Hardman,1996
3. Ibuprofen plus caffeine in the treatment of tension-type headache
4. U.S. Pharmacopoeia, XX, American Pharmaceutical Association, Washington DC, 1975.