Design of inhibitors for human tissue kallikrein using non-natural aromatic and basic amino acids - Pimenta, Daniel C.; Melo, Robson L.; Caliendo, Giuseppe; Santagada, Vincenzo; Fiorino, Ferdinando; Severino, Beatrice; De Nucci, Gilberto; Juliano, Luiz; Juliano, Maria A. (Biological Chemistry, 2002)