1. Above and belowground organic matter and root: shoot ratio in a cerrado in Central Brazil;Abdala;Braz. J. Ecol.,1998
2. Changes in soil carbon stocks in Brazil due to land use: paired site comparisons and a regional pasture soil survey;Assad;Biogeosciences,2013
3. Estimation of biological nitrogen fixation associated with Brachiaria and Paspalum grasses using 15N labelled organic matter and fertilizer;Boddey,1986
4. Methods of studying root systems;Böhm,1979
5. δ13C values of soil organic carbon and their use in documenting vegetation change in a subtropical savanna ecosystem;Boutton,1998