[1] Sweetman S C. Martindale: The Complete Drug Reference. 33rd ed. London: Pharmaceutical Press, 2002. 761.
[2] O’Neil M J, Smith A, Heckelman P E, et al. Merck Index. 13th ed. John Wiley and Sons, 2001. 166.
[3] The British Pharmacopoeia, Her Majesty Stationary Office, London, UK: 2007. 211.
[4] Zhang Y. J. Pharm. Clin. Res., 2001, 9: 13.
[5] Bartolincic A, Druskovic V, Sporec A, et al. J. Pharm. Biomed. Anal., 2005, 36: 1003.
[6] Wannerberg O, Persson B. J. Chromatogr. A, 1988, (435): 199.
[7] Harris R, Hodgkinson P, Larsson T, et al. J. Pharm. Biomed. Anal., 2005, (38): 858.
[8] Di Corcia D, Morra V, Pazzi M, et al. Biomed. Chromatogr., 2010, 24(4): 358.
[9] Amr M Badawy, Nadia M Mostafa, Abd El-Aziz B Abd El-Aleem, et al. Int. J. Comprehensive Pharm. IJCP, 2011, 6(10).
[10] Liu L, Li K X, Shi A X, et al. Chinese Journal of Pharmaceutical Analysis, 2001, 21(5): 316.
[11] Nadia M Mostafa, Amr M Badawey, Abd El-Aziz B Abd El-Aleem Nesrine T Lamie. Journal of Applied Pharmaceutical Science, 2011, 1(5): 191.
[12] Shi A X, Li K X, Cao G Y, et al. Chinese Journal of Pharmaceutical Analysis, 2001, 21(4): 290.
[13] Lotfy H M, Hegazy M A. Spectrochim. Acta A, 2012, 96: 259.
[14] Spiegel M R, Stephens L J. Schaum Outline of Theory and Problems of Statistics, Schaum Outline Series, New York, 1999.