Bulletin of Taras Shevchenko National University of Kyiv. Astronomy, no. 53, p. 6-11 (2016)
Time delay of critical images of a point source near the gravitational lens fold-caustic
A. N. Alexandrov, Ph. D.,
V. I. Zhdanov, Dr. Sci.
Astronomical Observatory of Taras Shevchenko National University of Kyiv (more…)

