H. T. H. Naing, K. H. S. Swe, and K. S. M. Muu, “Solid state fermentation of soybean meal with aspergillus Niger for upgrading nutritive values”, Int J Innov Educ Res, vol. 7, no. 5, pp. 374–381, May 2019, doi: 10.31686/ijier.vol7.iss5.1531.