SUNIL KUMAR, SANDEEP KUMAR, AVESH KUMAR, and OMBIR SINGH, “Productivity, profitability and quality of Indian mustard (Brassica juncea) as influenced by fertilizer levels and integrated nutrient-management”, IJA, vol. 61, no. 2, pp. 231–236, Oct. 2001, doi: 10.59797/ija.v61i2.4353.