Vargáné Visi, Éva, and Gréta Pápai. 2015. “How to Maintain the Effective Levels of Probiotics Throughout the Shelf Life in Yoghurt: A Review”. Acta Agraria Kaposváriensis 19 (1): 65-74. https://journal.uni-mate.hu/index.php/aak/article/view/2123.