info:oai:orgprints.org:15842info:ofi/fmt:xml:xsd:bookMarkussenMads VilleMarkussen, Mads VilleØstergårdHanneØstergård, HanneOleskowicz-PopielPiotrOleskowicz-Popiel, PiotrSchmidtJens EjbySchmidt, Jens EjbyPugesgaardSiriPugesgaard, Siri2009Energy and emergy evaluation of potentials for energy self-sufficiency in Danish organic dairy farms by production of biogas and bioethanolproceeding