Impact of organic pig production systems on CO2 emission, C sequestration and nitrate pollutionNiels Halberg, John E. Hermansen, Ib Sillebak Kristensen, Jørgen Eriksen, Niels Tvedegaard and Bjørn Molt PetersenAgron. Sustain. Dev., 30 4 (2010) 721-731DOI: https://doi.org/10.1051/agro/2010006
