1. The Origin of the “Berberine Carbon”;Barton;Proc. Chem. Soc. (London),1963
2. Investigations on the Biosynthesis of Morphine Alkaloids;Barton;J. Chem. Soc. (London),1965
3. Biosynthesis of the “Berberine Bridge”;Battersby;Proc. Chem. Soc. (London),1963
4. Alkaloid Biosynthesis. Part IV. 1-Benzylisoquinolines as Precursors of Thebaine, Codeine, and Morphine;Battersby;J. Chem. Soc. (London),1964
5. Opium Alkaloids — Separation and Identification by Gas, Thin-Layer, and Paper Chromatography;Brochmann-Hanssen;J. Pharmac. Sci,1964