Vilde, A., S. Cesnieks, and A. Rucins. “ENERGETICAL, ECONOMICAL AND ECOLOGICAL ASPECTS OF SOIL TILLAGE MINIMISATION”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 26, 2006): 294–299. Accessed May 4, 2024. https://journals.rta.lv/index.php/ETR/article/view/2023.