1. “On the nonthermal excitation and polarization of X-ray lines during solar flares”;Haug;Solar Physics,1979
2. “Electron impact polarization of X-ray lines from hydrogen-like ions during solar flares”;Haug;Solar Physics,1981
3. “On diagnostics of suprathermal electrons in high-temperature plasmas”;Shlyaptseva;P.N. Lebedev Physical Institute, Report No.,1981
4. “Polarization of lines of multiply-charged ions excited by electron impact”;Shlyaptseva;P.N. Lebedev Phys Instit Report No,1981
5. “Theory of excitation of He- and Li-like atomic sublevels by directive electrons: application to x-ray line polarisation”;Inal;J. Phys. B,1987