MADHULIKA PANDEY, V.P. SINGH, RAJEEW KUMAR, D.S. PANDEY, and I.P. SINGH, “Comparative performance of gypsum and micro-ionized sulphur on wheat (Triticum aestivum)”, IJA, vol. 59, no. 4, pp. 661–664, Oct. 2001, doi: 10.59797/ija.v59i4.4588.