@techreport{ThemaNanningBuhletal.2014,
  author    = {Thema, Johannes and Nanning, Sabine and Buhl, Johannes and G{\"o}tz, Thomas and Adisorn, Thomas and Kurth, Julia and Manirjo, Navina and Echternacht, Laura and Berg, Holger},
  title     = {PATHWAYS project : exploring transition pathways to sustainable, low carbon societies ; deliverable D2.1: Analysis of green niche-innovations and their momentum in the two pathways ; country report 4: Green niche-innovations in the German heat system},
  institution = {Wuppertal Institut f{\"u}r Klima, Umwelt, Energie},
  address   = {Wuppertal},
  pages     = {61},
  year      = {2014},
  language  = {en}
}