@ARTICLE {PAUSTIAN:1997, title = {Agricultural soils as a sink to mitigate CO2 emissions}, author = {Paustian, K. and Andren, O. and Janzen, H. H. and Lal, R. and Smith, P. and Tian, G. and Tiessen, H. and Van Noordwijk, M. and Woomer, P. L. }, journal = {Soil Use and Management}, year = {1997}, volume = {13}, pages = {230--244}, }