1. Über Yohimbin: (Dritte Mitteilung);Recueil des Travaux Chimiques des Pays-Bas;2010-09-03
2. Ueber Dekahydroyobyrin und Tetrahydroyobyrin;Recueil des Travaux Chimiques des Pays-Bas;2010-09-02
3. Alkaloids in Pausinystalia yohimbe (K.Schum.) ex pierre: Part III. The structure of a new alkaloid;Recueil des Travaux Chimiques des Pays-Bas;2010-09-02
4. Synthetic and Natural Sources of the Pyridine Ring;Chemistry of Heterocyclic Compounds: A Series Of Monographs;2008-01-02
5. Natural Products Containing the Indole Nucleus;Chemistry of Heterocyclic Compounds: A Series Of Monographs;2008-01-02