@unpublished{orgprints20095,
            year = {2011},
           month = {November},
           title = {ProPIG},
          author = {C. Leeb},
        keywords = {COseminar2011},
        abstract = {Farm specific strategies to reduce environmental impact  by improving health, welfare and nutrition of organic pigs.},
             url = {https://orgprints.org/id/eprint/20095/}
}