Classification
ETFG - Polymer electrolyte membrane fuel cells ( PEMFC )
26
ETF - Fuel cells - general
8
ETFP - Fuel cell construction and modeling
4
ESB - Hydrogen energy
3
ETC - Energy conversion
3
TKJ - Traffic
3
THQD - Gas flow
2
UHK - Traffic and environment - incl. automobile exhaust gas
2
CLPS - Organic colloids, membranes
1
CNRO - Electrode processes
1
CXA - Coal and fossil fuel - chemistry and technology
1
ETFG - Polymerelektrolyt-Brennstoffzellen ( PEMFC )
1
FPUG - Special purpose coatings
1
THQ - Fluid mechanics and dynamics
1