@inproceedings{60b73ae01b7141ed8b1f863b066d963d,
title = "Environmental Costs of energy from Two Biogas Plants in Denmark",
author = "Nielsen, {Per Sieverts}",
note = "Presentation and paper; 4th Biomass Conference of the Americas ; Conference date: 29-08-1999 Through 02-09-1999",
year = "1999",
language = "English",
isbn = "9780080430195",
volume = "1-2",
pages = "421--426",
editor = "R.P. Overend and E. Chornet",
booktitle = "Biomass - A Growth Opportunity in Green Energy and Value-added Products",
publisher = "Pergamon Press",
}