G Pifferi

[Characterization of plant extracts and registration requirements].

G Pifferi, 1990, Bollettino chimico farmaceutico.

Drug impurities: problems and regulations.

G Pifferi, A Mannucci, 1999, Bollettino chimico farmaceutico.

Quality and functionality of excipients.

G Pifferi, P Santoro, M Pedrani, 1999, Farmaco.