Kalloum, S. .; Khelafi, M. .; Djaafri, M. .; Tahri, A. .; Kaïdi, K. .; Touzi, A. . Study of Start-up of a Continuous Digester on a Laboratory Scale Treating the Sludge Issued from Wastewater Treatment Plant in Adrar City (south West of Algeria). J. Ren. Energies 2012, 15 (2), 229 – 234. https://doi.org/10.54966/jreen.v15i2.314.