1. Biogas upgrading technologies – developments and innovations;Wellinger,2009
2. Climate Change 2013: The Physical Science Basis;Stocker,2013
3. Biogas Upgrading – Review of Commercial Technologies;Bauer,2013
4. Biogas upgrading–technology overview, comparison and perspectives for the future;Bauer;Biofuels, Bioprod. Biorefin.,2013
5. Membrane Technology and Applications;Baker,2012