Coppolecchia, Damiano, Davide Gardoni, Cecilia Baldini, Federica Borgonovo, and Marcella Guarino. 2015. “The Influence on Biogas Production of Three Slurry-Handling Systems in Dairy Farms”. Journal of Agricultural Engineering 46 (1):30-35. https://doi.org/10.4081/jae.2015.449.