Thanh Quan, P., D. Chi Bao, T. Van Hang, F. Cormier, E. Harnworth, and M. Rose Van Calsteren. “THE PROCESS OF SEPARATION OF IRIDOIDS FROM THE EXTRACT OF GARDENIA FRUIT (GARDENIA JASMINOIDES ELLIS)”. Science and Technology Development Journal, Vol. 2, no. 11&12, Dec. 1999, pp. 54-63, doi:https://doi.org/10.32508/stdj.v2i11&12.3696.