Classification
PEG - Optics
4
CHJ - Molecular physics, molecular structure
3
PEGB - Optics - theory
3
PJA - Atomic physics - general
3
PBB - Quantum theory - special methods
2
PBA - Quantum theory
1
PBBC - Relativistic quantum mechanics
1
PKKA - Quantum field theory
1
TBT - Optoelectronics, optical fibers, displays
1