K.T. Parthiban, and R.S. Vinaya Rai. “EFFECTS OF A FEW PLANT SPECIES ON SOIL PHYSICAL PROPERTIES”. Journal of Tropical Forest Science (JTFS), vol. 6, no. 3, Mar. 1994, pp. 223-9, https://jtfs.frim.gov.my/jtfs/article/view/1896.