Yang, Zhennai, Eero Pahkala, and Tuomo Tupasela. “Lactose Hydrolysis by Free and Fibre-Entrapped β-Galactosidase from Streptococcus Thermophilus”. Agricultural and Food Science 2, no. 5 (September 1, 1993): 395–401. Accessed May 3, 2024. https://journal.fi/afs/article/view/72665.