Quantification of 4′-geranyloxyferulic acid, a new natural colon cancer chemopreventive agent, by HPLC-DAD in grapefruit skin extract. - Genovese,S.; Epifano,F.; Carlucci,G.; Marcotullio,M.C.; Curini,M.; Locatelli,M. (J Pharm Biomed Anal, 2010)