U. SAH, S. K. SINGH, and J. K. PAL, “Farmer-To-Farmer Extension (F2FE) approach for speedier dissemination of agricultural technologies: A review”, Indian J Agri Sci, vol. 91, no. 10, pp. 1419–1425, Nov. 2021, doi: 10.56093/ijas.v91i10.117403.