X ray observations of the LMC field by the TTM instrument onboard the KVANT module: November 1988 to June 1989

X ray polarization of the reprocessed emission from accretion disk in Seyfert galaxies

X ray spectra of bright BL Lacertae objects observed with ROSAT

X ray spectra of cataclysmic variables

X ray spectra of OVV QSOs

X ray spectra of X Per

X ray spectral index variability in NGC 4151

X ray spectral structure of Seyfert galaxies

X ray spectral structure of the Seyfert 2 galaxy NGC 5506

X ray spectral variability in Seyfert 1 galaxies

X ray spectrum and variability of MRK 509 as observed with EXOSAT and GINGA

X ray studies of the Hyades cluster

X ray timing and spectral measurements of the X ray pulsar 4U 1538-52

X ray variability of active galactic nuclei

X raying the interstellar dust

X Rays from Collisions of Stars.

X Rays from Coronal Condensations and the Development of Active Regions.

X Rays from Coronal Condensations and the Development of Active Regions.

X rays from G54.1+0.3

X rays from radio binaries