Sommers, D. K., Meyer, E. C., Van Wyk, M., Moncrieff, J., Snyman, J. R., & Grimbeek, R. J. (1992). The influence of codeine, propantheline and metoclopramide on small bowel transit and theophylline absorption from a sustained-release formulation.

Sommers, D K., E C. Meyer, M. Van Wyk, J. Moncrieff, J R. Snyman, and R J. Grimbeek. The Influence of Codeine, Propantheline and Metoclopramide On Small Bowel Transit and Theophylline Absorption From a Sustained-release Formulation. 1992.

Sommers, D K., et al. The Influence of Codeine, Propantheline and Metoclopramide On Small Bowel Transit and Theophylline Absorption From a Sustained-release Formulation. 1992.