(en) Ley JP, Krammer G, Reinders G, Gatfield IL, Bertram HJ (2005) Evaluation of bitter masking flavanones from Herba Santa (Eriodictyon californicum (H. and A.) Torr., Hydrophyllaceae). Journal of agricultural and food chemistry. 27;53(15):6061-6. PMID16028996
(en) Ley JP, Blings M, Paetz S, Krammer GE, Bertram HJ (2006) New bitter-masking compounds: hydroxylated benzoic acid amides of aromatic amines as structural analogues of homoeriodictyol. Journal of agricultural and food chemistry. 1;54(22):8574-9. PMID17061836