Composition #2: Chiavari, G., Galletti, G.C., Piccaglia, R., Mohamud, M.A. Differentiation between resins Boswellia carterii and Boswellia frereana (Frankincense) of Somali origin. journal of essential oil research, 1991, vol. 3, no. 3, p. 185–186. DOI: 10.1080/10412905.1991.9700500.
[
DOI link]