Classification
ETF - Fuel cells - general
10
ETFK - Direct methanol fuel cells ( DMFC )
9
ESB - Hydrogen energy
4
ETC - Energy conversion
2
ETFP - Fuel cell construction and modeling
2
EVP - Energy models, energy system analysis
2
TKJ - Traffic
2
UHK - Traffic and environment - incl. automobile exhaust gas
2
CNW - Electrochemical energy production and conversion
1
CXX - Hydrogen production - chemistry and technology
1