Analysis of information sources in references of the Wikipedia article "Султан Хан" in Ukrainian language version.
'Alā' al-Dīn Kay Qubād's reign is generally recognized as the height of Seljuk state power.... the new Sultan's architectural agenda... was definitely oriented southward to Syria. Note 23: For example, he employed the Syrian architect Muhammad ibn Khalwan al-Dimashqi to extend the Sultanic mosque in Konya. See Crane, Muslim Patronage in Saljuq Anatolia, 109.
'Alā' al-Dīn Kay Qubād's reign is generally recognized as the height of Seljuk state power.... the new Sultan's architectural agenda... was definitely oriented southward to Syria. Note 23: For example, he employed the Syrian architect Muhammad ibn Khalwan al-Dimashqi to extend the Sultanic mosque in Konya. See Crane, Muslim Patronage in Saljuq Anatolia, 109.