Libutti, Angela, Massimo Mucci, Matteo Francavilla, and Massimo Monteleone. “Effect of Biochar Amendment on Nitrate Retention in a Silty Clay Loam Soil”. Italian Journal of Agronomy 11, no. 4 (August 10, 2016): 273-276. Accessed February 28, 2021. https://www.agronomy.it/index.php/agro/article/view/780.