Basavaraju, T.B., H.V. Nanjappa, K. Umesha, M. Vasundhara, and S. Arulraj. 2011. “Intercropping of Medicinal and Aromatic Plants in Coconut Gardens”. Journal of Plantation Crops 39 (2):299-304. https://updatepublishing.com/journal/index.php/JPC/article/view/5936.