1. The IGBP-DIS global 1-km land-cover data set DISCover: a project overview;Belward;Photogramm. Eng. Rem. Sens.,1999
2. A global high-resolution emission inventory for ammonia;Bouwman;Glob. Biogeochem. Cycles,1997
3. Outgrowing the Earth, The Food Security Challenge in an Age of Falling Water Tables and Rising Temperature;Brown,2004
4. Meeting cereal demand while protecting natural resources and improving environmental quality;Cassman;Annu. Rev. Environ. Resour.,2003
5. Deichmann, U., 1996. GNV197: human population and administrative boundaries databases for Asia. GRID-Geneva, United Nations Environmental Programme, Geneva.