Matpan Bekler, F, P Stougaard, K Güven, R Gül Güven, and í– Acer. 2015. “Cloning, Purification and Characterization of a Thermostable β-Galactosidase from Bacillus Licheniformis Strain KG9”. Cellular and Molecular Biology 61 (3):71-78. https://mail.cellmolbiol.org/index.php/CMB/article/view/672.