1. Ulugh Beg Astronomical Institute, Astronomy St. 33, Tashkent 100052, Uzbekistan
2. New Uzbekistan University, Mustaqillik Avenue 54, Tashkent 100007, Uzbekistan
3. Central Asian University, Milliy Bog St. 264, Tashkent 111221, Uzbekistan
4. National University of Uzbekistan, Tashkent 100174, Uzbekistan