(2009. július 1.) „Phytochemical characterization of the leaves of Mitragyna speciosa grown in U.S.A”. Natural Product Communications4 (7), 907–10. o. DOI:10.1177/1934578X0900400705. PMID19731590.
(1984. október 1.) „Inhibition of the alpha 1 and alpha 2-adrenoceptor-mediated pressor response in pithed rats by raubasine, tetrahydroalstonine and akuammigine”. European Journal of Pharmacology106 (1), 203–5. o. DOI:10.1016/0014-2999(84)90698-8. PMID6099269.
(2009. július 1.) „Phytochemical characterization of the leaves of Mitragyna speciosa grown in U.S.A”. Natural Product Communications4 (7), 907–10. o. DOI:10.1177/1934578X0900400705. PMID19731590.
(1984. október 1.) „Inhibition of the alpha 1 and alpha 2-adrenoceptor-mediated pressor response in pithed rats by raubasine, tetrahydroalstonine and akuammigine”. European Journal of Pharmacology106 (1), 203–5. o. DOI:10.1016/0014-2999(84)90698-8. PMID6099269.