@incollection{WelfensSchuetz1999,
  author    = {Welfens, Maria J. and Sch{\"u}tz, Helmut},
  title     = {Towards a new material based approach for sustainable development : western experiences},
  booktitle = {Sustainable development by dematerialization in production and consumption : strategy for the new environmental policy in Poland},
  publisher = {Inst. for Sustainable Development},
  address   = {Warsaw},
  pages     = {15 -- 26},
  year      = {1999},
  language  = {en}
}