Organic matter quality in a soil cultivated with perennial herbaceous legumes - Canellas, Luciano Pasqualoto; Espindola, José Antonio Azevedo; Rezende, Carlos Eduardo; Camargo, Plinio Barbosa de; Zandonadi, Daniel Basílio; Rumjanek, Victor Marcos; Guerra, José Guilherme Marinho; Teixeira, Marcelo Grandi; Braz Filho, Raimundo (Scientia Agricola, 2004)