Bolfe, É.L., Batistella, M. and Ferreira, M.C. (2012) “Correlation of spectral variables and aboveground carbon stock of agroforestry systems”, Pesquisa Agropecuaria Brasileira, 47(9), pp. 1261–1269. doi:10.1590/S1678-3921.pab2012.v47.11549.