Campos Pinilla, M. C., Medina Córdoba, L. K., Fuentes, N. P. and García Montoya, G. I. (2015) “Assessment of indicators of fecal contamination in soils treated with biosolids for growing grasses”, Universitas Scientiarum, 20(2), pp. 217–227. doi: 10.11144/Javeriana.SC20-2.aifc.