RT Article T1 Existence Deriving from 'the Existent': Mulla Sadra with Ibn Sīnā and al-Suhrawardī JF Avicenna and his legacy SP 249 OP 256 A1 Burrell, David B. LA English YR 2009 UL https://ixtheo.de/Record/637051688 SN 9782503527536