Classification
PKGF - Cyclic accelerators, storage facilities
3
TKH - Air flight, space flight
3
MAK - Mathematics - formulae, tables
2
EFP - Petroleum production, natural gas production
1
LLE - Protein chemistry - general aspects
1
MKAE - Stability theory - ODE
1
MKBE - Stability theory - PDE
1
MRB - Special functions, special polynomials
1
PEB - Electromagnetic fields
1
PGC - Physics of ionized gases, electric discharges
1
THHD - Machine parts
1
TKJ - Traffic
1
UXLF - Decontamination
1