Yulia, E., Shipton, W.A., and Coventry, R.J. (2008) Antifungal activity of selected aromatic and volatile oils and plant extracts on putative plant pathogens. Journal of Medicinal and Aromatic Plant Sciences, 30 (4). pp. 109-112.

Yulia, E., Shipton, W.A., and Coventry, R.J. (2006) Activity of some plant oils and extracts against Collectotrichum gloeosporioides. Plant Pathology Journal, 5 (2). pp. 253-257.