A. RAFEY and N. K. PRASAD, “ Competition functions and economic viability of intercropping of sorghum (Sorghum bicolor) and blackgram (Phaseolus mungo) in drylands”, IJA, vol. 41, no. 4, p. 41_4 , Oct. 2001, doi: 10.59797/ija.v41i4.3701.