Classification
EXA - Energy policy
EPK - Nuclear energy
2
EVP - Energy models, energy system analysis
2
EAE - Energy - general
1
EHA - Renewable energy sources
1
EUD - Energy consumption
1
EVA - Energy demand, energy supply - comprehensive works
1
EVN - Energy supply - future aspects
1
UEF - Sustainability
1
UKE - Environment and energy resources
1