A Study of the trypanocidal and analgesic: properties from lychnophora granmongolense (Duarte) Semir & Leitão Filho - Grael, Cristiane Fernanda Fuzer; Vichnewski, Walter; Souza, Glória Emília Petto de; Lopes, João Luis Callegari; Albuquerque, Sérgio de; Cunha, Wilson Roberto (Phytotherapy research, 2000)