Lapiņš, Dainis, Andris Bērziņš, Zinta Gaile, and Jeļena Koroļova. “EFFECTS OF SOIL TILLAGE AND SOWING TECHNOLOGIES ON WINTER WHEAT”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 20, 2001): 61–65. Accessed May 1, 2024. https://journals.ru.lv/index.php/ETR/article/view/1937.