Ch. SRINIVASARAO, “Direct and residual effects of integrated sulphur fertilization in maize (Zea mays)- chickpea (Cicer arietinum) cropping system on Typic Ustochrept”, IJA, vol. 55, no. 4, pp. 259–263, Oct. 2001, doi: 10.59797/ija.v55i4.4760.