Tomasello, Giovanni, et al. “A Mixture of Vegetable Extracts (chamomile, Passionflower, Caraway, Fennel) and Enzymes (beta-Galactosidase) for Irritable Bowel Syndrome (IBS): An Observational Study ("BIOVES"): STUDIO ‘BIOVES’”. Progress in Nutrition, vol. 20, no. 3, Sept. 2018, pp. 526-31, https://doi.org/10.23751/pn.v20i3.7574.