Seasonal variation of triterpenes and steroids from Eremanthus elaeagnus and E. glomerulatus - Sakamoto, Humberto Takeshi; Gobbo Neto, Leonardo; Schinor, Elisandra; Turatti, Isabel Cristina Casanova; Dias, Diones Aparecida; Lopes, Norberto Peporine; Lopes, João Luís Callegari (International Joint Symposium Chemistry, 2004)