Paudel, D. R., P. Dhakal, K. P. Timsina, and A. Dahal. “Azolla As an Economic Substitute to Soybean Based Feed for Poultry”. International Journal of Applied Sciences and Biotechnology, vol. 3, no. 4, Dec. 2015, pp. 619-25, doi:10.3126/ijasbt.v3i4.13636.