Ende, S. . “Nitrogen Dynamics in the Corn-Soybean Intercropping Pattern Due to Applications Residue of Corn, Soybean and Biochar”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 55, no. 2, Feb. 2021, pp. 172-8, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/12241.