1. Personal communication;Abildgaard,2017
2. Biofuel supply chain design under competitive agricultural land use and feedstock market equilibrium;Bai;Energy Econ.,2012
3. Biomasse til biogasanlæg i Danmark - på kort og langt sigt (Biomasses for biogas plants in Denmark - in the short and long run);Birkmose,2013
4. A pedagogical treatment of bilateral monopoly;Blair;South. Econ. J.,1989
5. Cooperatives and Payment Schemes; Lessons From Theory and Examples From Danish Agriculture;Bogetoft,2007