Al-Akayleh, F., 		Al Remawi, M., 		Salem, M., & 		Badwan, A.
2014 Jun 25.  Chitosan and Xanthan Gum Mixtures as Excipient for Controlled Release of Ambroxol HCl: In- vitro drug Release and Swelling Behavior. Journal of Excipients and Food Chemicals. [Online] 5:2