Cheung, H.T. and Tőkés, L. (1968) Oxygenated derivatives of asiatic acid from dryobalanops aromatica. Tetrahedron Letters, 9 (41). pp. 4363-4366. ISSN 0040-4039, DOI https://doi.org/10.1016/S0040-4039(01)99132-4.