M. da C. Silva, J. C. Tavares, G. S. de O. Rodrigues, and P. B. Maracajá, “UTILIZATION OF THE UNRIPE AND DRY COCONUT COIR DUST ASSOCIATING EARTHWORM CASTINGS IN THE PRODUCTION OF YELLOW-PASSION SEEDLINGS”, Green Journal, vol. 4, no. 2, pp. 23–30, Mar. 2009.