@article{Keller2010,
  author    = {Keller, Sarina},
  title     = {Sources of difference : in answer to the article about diverging paths of German and US policies for renewable energies},
  journal   = {Energy policy},
  volume    = {8},
  number    = {38},
  doi       = {10.1016/j.enpol.2009.10.035},
  pages     = {4741 -- 4742},
  year      = {2010},
  language  = {en}
}