Analysis of information sources in references of the Wikipedia article "Аль-Фергани" in Russian language version.
A brief exposition in 30 chapters was composed in Baghdad by the Persian astronomer al-Farghani (in Latin. Alfraganus. с. л. D. 800-c. 870).
A brief exposition in 30 chapters was composed in Baghdad by the Persian astronomer al-Farghani (in Latin. Alfraganus. с. л. D. 800-c. 870).