Boykov, V. M., Startsev, S. V. and Vorotnikov, I. L. (2019) “Improving the technology and primary tillage plow”, Amazonia Investiga, 8(22), pp. 539–549. Available at: https://amazoniainvestiga.info/index.php/amazonia/article/view/795 (Accessed: 22 July 2024).