Classification
EVA - Energy demand, energy supply - comprehensive works
230
EXA - Energy policy
35
EVH - Energy supply - economic growth
20
EWA - Energy economy
17
AZZ - Firm index - general
16
EVN - Energy supply - future aspects
12
UKE - Environment and energy resources
10
EHA - Renewable energy sources
9
EVB - Energy supply of Germany
7
EUA - Energy conservation - general
6
EBA - Energy production, energy technology
5
TED - Electric power - industrial aspect
5
EAA - Energy - reference books
4
ETC - Energy conversion
4
EUU - Cogeneration
4
EVP - Energy models, energy system analysis
4
TEDD - Electric power transmission
4
UMV - Climatic change
4
EFP - Petroleum production, natural gas production
3
GFA - Mineralogy - general
3
TEA - Electrical engineering - general
3
UKB - Environmental effects and energy
3
EEA - Coal - general
2
ESA - Synthetic fuels - utilization
2
EUC - Energy conservation - civil engineering
2
TKJ - Traffic
2
UKA - Environmental damage and energy production
2
DVA - Data and file management
1
EFA - Petroleum, natural gas
1
EPK - Nuclear energy
1
ETF - Fuel cells - general
1
EVN - EnEVH - Energy supply - economic growth
1
EYA - Energy problems of developing countries
1
GRB - Climatology
1
TNB - Nuclear power plants
1
UCA - Environmental problems, man and environment - general aspects
1
UEF - Sustainability
1
UMGE - Carbon capture and storage (CCS)
1
YPB - Economy - general aspects
1
YPG - Business management
1
YPGM - Cost management
1