Jurkowski, Andrzej, Jacek J. Kozioł, and Ewelina Gronczewska. 2019. “A Method to Increase the Survival of Probiotic Bacteria Lactobacillus Brevis at a Lowered PH”. Biological Letters 54 (1):13-20. https://doi.org/10.2478/biolet-2019-0002.