Classification
ETC - Energy conversion
13
ETA - Energy storage
10
ETF - Fuel cells - general
5
CNW - Electrochemical energy production and conversion
4
CNWK - Electric batteries
4
EBA - Energy production, energy technology
4
EIA - Solar energy - general
3
UKA - Environmental damage and energy production
3
CNR - Electrodes
2
EAD - Energy - comprehensive works
2
EHA - Renewable energy sources
2
EVB - Energy supply of Germany
2
EVN - Energy supply - future aspects
2
EVP - Energy models, energy system analysis
2
FNPE - Nanostructured materials
2
CNE - Electrochemistry
1
CNLH - Organic electrochemistry
1
CNO - Electrolytes
1
EAA - Energy - reference books
1
ECA - Energy resources
1
EIC - Solar thermal energy conversion
1
EIP - Photovoltaics
1
EPK - Nuclear energy
1
ESB - Hydrogen energy
1
ETFD - Solid oxide fuel cells ( SOFC )
1
EUA - Energy conservation - general
1
FAE - Materials research - general interest
1
FAN - Solid state physics - mathematical methods, computer applications
1
FGN - Nanotechnology
1
FJB - Electric materials
1
FJBE - Ferroelectric materials
1
FNPD - Hard materials, refractory compounds
1
FNPH - Ceramics for specific applications
1
PGKA - Physics of thermonuclear fusion
1
TNLC - Nuclear fuel cycle
1
UKE - Environment and energy resources
1