Payback time for soil carbon and sugar-cane ethanol - Mello, Francisco Fujita de Castro; Cerri, Carlos Eduardo Pellegrino; Davies, Christian A; Holbrook, Noel Michele; Paustian, Keith; Maia, Stoécio Malta Ferreira; Galdos, Marcelo Valadares; Bernoux, Martial; Cerri, Carlos Clemente (Nature Climate Change, 2014)