Methods of surface testing of telescope BTA(Informational page of IFMO)

CCD cameras of ADlab, SAO RAS

The Sun at RATAN-600 radio telescope

Solar Radio Astronomy at Metsahovi, HUT, Finland

Experiment "Cold" at RATAN-600 radio telescope

"Dark Ages" of the Universe

Interacting Galaxies

Polar-Ring Galaxies

WWW-version of the Problem Book 'The Paradoxical Universe'

by V.V.Ivanov, A.V.Krivov and P.A. Denissenkov