Ahmad, G., and A. A. Khan. “Fly Ash Effect on Hatching, Mortality and Penetration of Root-Knot Nematode (Meloidogyne Incognita) in Pumpkin Roots”. International Journal of Environment, vol. 5, no. 3, Sept. 2016, pp. 66-73, doi:10.3126/ije.v5i3.15705.