Encyclopaedia Iranica. Music of Azerbaijan.Архивная копия от 3 февраля 2011 на Wayback Machine: «The art music of Azerbaijan is connected with the Irano-Arabo-Turkish art of the maqām, of which the great theoreticians were notably Ṣafī-al-dīn Ormavī (d. 693/1294) and ʿAbd-al-Qāder b. Ḡaybī Marāḡī (d. 838/1435), who were originally from Urmia and Marāḡa in Azerbaijan.»
Encyclopaedia Iranica. Music of Azerbaijan.Архивная копия от 3 февраля 2011 на Wayback Machine: «The art music of Azerbaijan is connected with the Irano-Arabo-Turkish art of the maqām, of which the great theoreticians were notably Ṣafī-al-dīn Ormavī (d. 693/1294) and ʿAbd-al-Qāder b. Ḡaybī Marāḡī (d. 838/1435), who were originally from Urmia and Marāḡa in Azerbaijan.»