Nutrient value, odour emission and energy production of manure as influenced by anaerobic digestion and separation M. Hjorth, A. M. Nielsen, T. Nyord, M. N. Hansen, P. Nissen and S. G. SommerAgron. Sustain. Dev., 29 2 (2009) 329-338DOI: https://doi.org/10.1051/agro:2008047