Issa, Y. M., A. F. A. Youssef, and A. A. Mutair,
"Conductimetric determination of phenylpropanolamine HCl, ranitidine HCl, hyoscyamine HBr and betaine HCl in their pure state and pharmaceutical preparations",
Farmaco, vol. 60, pp. 541–546, 2005.
Abstractn/a