S. SHWETA, S. K. SAINI, R. K. SINGH, and B. S. MAHAPATRA, “Improving wheat productivity in rice (Oryza sativa)–wheat (Triticum aestivum) cropping system through crop establishment methods*”, Indian J Agri Sci, vol. 81, no. 2, Feb. 2011, doi: 10.56093/ijas.v81i2.4004.