S.K. PATHAK, S.B. SINGHZ, R.N. JHA, and R.P. SHARMA, “Effect of nutrient management on nutrient uptake and changes in soil fertility in maize (Zea mays)-wheat (Triticum aestivm) cropping system”, IJA, vol. 50, no. 4, pp. 269–273, Oct. 2001, doi: 10.59797/ija.v50i4.5124.