Kopp, Sascha; Baur, Roland; Sigel, Erwin; Möhler, Hanns; Altmann, Karl-Heinz (2010). Highly potent modulation of GABA(A) receptors by valerenic acid derivatives. ChemMedChem, 5(5), pp. 678-81. Weinheim: Wiley-VCH 10.1002/cmdc.201000062