Classification
ESB - Hydrogen energy
ETF - Fuel cells - general
5
UHK - Traffic and environment - incl. automobile exhaust gas
5
TKJ - Traffic
4
ETC - Energy conversion
2
EWA - Energy economy
2
CXRU - Synthetic fuels
1
CXX - Hydrogen production - chemistry and technology
1
CXXL - Electrochemical hydrogen production
1
ETA - Energy storage
1
EVB - Energy supply of Germany
1
EXA - Energy policy
1
FMXG - Metal hydrogen systems - specific aspects, specific systems
1