Soil nitrous oxide emissions in long-term cover crops-based rotations under subtropical climate - Gomes, Juliana; Bayer, Cimélio; Costa, Falberni de Souza; Piccolo, Marisa de Cassia; Zanatta, Josiléia Acordi; Vieira, Frederico Costa Beber; Six, Johan (Soil & Tillage Research, 2009)