Classification
TEJ - Electric devices, mechanical devices, magnets, dielectrics
30
FKG - Magnetic materials
9
FJB - Electric materials
3
FKA - Magnetism - general aspects
3
CNW - Electrochemical energy production and conversion
2
CNWK - Electric batteries
2
EBA - Energy production, energy technology
2
EHA - Renewable energy sources
2
CNJ - Electrochemistry - comprehensive works
1
ETA - Energy storage
1
ETF - Fuel cells - general
1
FAP - Advanced materials - development and applications
1
FAQ - Materials research - institutions, research and development
1
FJBE - Ferroelectric materials
1
FPUG - Special purpose coatings
1
PGKA - Physics of thermonuclear fusion
1
PGL - Plasma confinement
1
PGNB - Fusion reactor materials
1
PKA - Elementary particles, nuclei - general
1
THD - Design and construction in mechanical engineering
1