Critical assessment of furrow openers and operational parameters for optimum performance under conservation tillage oleh B. S. Madhusudan, H. L. Kushwaha, Adarsh Kumar, Roaf Ahmad Parray, Sidhartha Sekhar Swain, Manojit Chowdhury, Ramineni Harsha Nag, K. R. Asha, Sunil Kumar Rathod, Pradeep Kumar, Rohit Anand, Nadhir Al-Ansari, Ahmed Z. Dewidar, Mohamed A. Mattar