Classification
EVP - Energy models, energy system analysis
EXA - Energy policy
EUD - Energy consumption
3
EAD - Energy - comprehensive works
2
EHA - Renewable energy sources
2
ETC - Energy conversion
2
TIG - Reliability, safety, quality control
2
EVN - Energy supply - future aspects
1
UEF - Sustainability
1
UKE - Environment and energy resources
1