R. J. Singh, “Weed management in irrigated wheat (Triticum aestivum) with special reference to buttercup weed (Ranunculus spp) in north-west Himalayas”, Indian J Agri Sci, vol. 82, no. 8, pp. 706–10, Aug. 2012, doi: 10.56093/ijas.v82i8.23058.