M. Khalid, M. . Samad, S. . Elahi, and S. Fahad, “Adoption and Productivity Assessment of Zinc-Biofortified Wheat (Akbar-19) Among Smallholder Farmers in District Khyber, Pakistan”, AgroEnviron. Sustain., vol. 4, no. 3, pp. 240–249, Sep. 2026, doi: 10.59983/s2026040301.