Funding for this research was provided by:
International Energy Agency Bioenergy (-)
Article History
Received: 29 August 2020
Accepted: 2 February 2021
First Online: 18 March 2021
Ethics approval and consent to participate
: Not applicable.
: Consent was obtained to reproduce Fig. 4, Table 5 in a new layout compared to the original and Table 3 in a modified version compared to the original.
: The authors declare that they have no competing interests.