Aguilar Torres, M., De Luna Armenteros, E., Ordóñez Fernández, R., & González Fernández, P. (2004). Digital image analysis for the estimation of cracked areas and the soil shrinkage characteristic curve in clay soils amended with composted sewage sludge. Spanish Journal of Agricultural Research, 2(3), 473-479. https://doi.org/10.5424/sjar/2004023-101