Inhibition of Mutagenicity in Salmonella typhimurium by Glycyrrhiza glabra Extract, Glycyrrhizinic Acid and 18α- and 18β-Glycyrrhetinic Acids - Zani, F; Cuzzoni, M T; Daglia, M; Benvenuti, S; Vampa, G; Mazza, P (Planta Medica, 1993)