Janiszewska, D., & Ossowska, L. (2018). Diversification of European Union Member States Due to the Production of Renewable Energy from Agriculture and Forestry. Zeszyty Naukowe SGGW W Warszawie - Problemy Rolnictwa Światowego, 18(2), 95–104. https://doi.org/10.22630/PRS.2018.18.2.37