RT Article T1 Zur Namengebung Kairos (al-Qāhir = Mars?) JF Der Islam VO 52 IS 2 SP 209 OP 225 A1 Kunitzsch, Paul LA German YR 2009 UL https://ixtheo.de/Record/1523137215 DO 10.1515/islm.1975.52.2.209