Indirect Emissions from Biofuels: How Important?,
Melillo, Jerry M., Reilly J., Kicklighter David W., Gurgel Angelo, Cronin Timothy W., Paltsev S., Felzer Benjamin S., Wang X., Sokolov A. P., and C. Schlosser Adam
, Science, 12/2009, Volume 326, p.1397 - 1399, (2009)