@techreport{Sachs2001,
  type      = {Working Paper},
  author    = {Sachs, Wolfgang},
  title     = {Rio +10 and the North-South divide : an essay},
  series    = {World summit papers},
  volume    = {8},
  institution = {Heinrich B{\"o}ll Foundation},
  address   = {Berlin},
  pages     = {13},
  year      = {2001},
  language  = {en}
}