Rahmawati, Aisyah Agis, et al. “The Fermentation Time Effect Against the Isoflavones Profiles of Genistein and Daidzein of Blacksoyghurt As a Potential Functional-Probiotic Drink”. International Journal on Advanced Science, Engineering and Information Technology, vol. 13, no. 2, Apr. 2023, pp. 522-9, doi:10.18517/ijaseit.13.2.17463.