Classification
EXA - Energy policy
6
EAE - Energy - general
4
EVA - Energy demand, energy supply - comprehensive works
2
PKP - Radioactivity, electromagnetic transitions
2
UKA - Environmental damage and energy production
2
CRH - Radiochemistry
1
EAD - Energy - comprehensive works
1
EHA - Renewable energy sources
1
ETC - Energy conversion
1
ETF - Fuel cells - general
1
EWA - Energy economy
1
EYA - Energy problems of developing countries
1