@incollection{Hennicke2001,
  author    = {Hennicke, Peter},
  title     = {Factor 4 : a strategy for eco-efficiency ; doubling wealth - halving resource use},
  booktitle = {Corporate strategy in the age of global environmental conservation : in search of new business development ; international symposium {"}Business and environment{"}},
  publisher = {Inst. for Global Environmental Strategies},
  address   = {Kanagawa},
  pages     = {13 -- 37},
  year      = {2001},
  language  = {en}
}