Sahuri, S., Cahyo, A. N., Ardika, R., Nugraha, I. S., Alamsyah, A., & Nurmansyah, N. (2019). Modification of Rubber (Hevea brasiliensis Muell. Arg.) Spacing for Long-term Intercropping. Journal of Tropical Crop Science, 6(01), 50–59. https://doi.org/10.29244/jtcs.6.01.50-59