Alkaloids of Alstonia lanceolifera. Massiot G, Vercauteren J. N Petitfrere-Auvray, J Vercauteren, G Massiot… - Phytochemistry, 1981 - Elsevier GSID: Q-EidRXKz-4J
Alkaloids from the stem-bark of Alstonia macrophylla. Choo YM. TS Kam, H Iek, YM Choo - Phytochemistry, 1999 - Elsevier GSID: vWq_tz3IkfwJ
Alkaloids from Alstonia angustifolia. Choo YM. TS Kam, YM Choo - Phytochemistry, 2004 - Elsevier GSID: xl2kDnKGiB0J
Alkaloids of the aspidospermine group. [No authors listed] JE Saxton - 1998 - books.google.com GSID: 5Zaob3CcxhwJ
Some alkaloids of Alstonia undulata. Massiot G. D Guillaume, AM Morfaux, B Richard, G Massiot… - Phytochemistry, 1984 - Elsevier GSID: k5X-qu4yOa8J
