Levina-BulatovaV. L., “On the history of Zeinaddin Mausoleum”, Architectural inheritance of Uzbekistan (Institute of Art Study, Academy of Sciences of UzSSR, Tashkent, 1960), 75–84.
2.
TzybulsliiV. V., Luni-solar calendar of Asian countries (Moscow, 1987).
3.
RozenfeldB. A., “The astronomy of countries of Islam”, Historical astronomical researches, xvi (1984), 67–122. Also SayiliA., The observatory in Islam (Ankara, 1960; repr. New York, 1980).
