ISMI Islamic Scientific Manuscripts Initiative

Full reference OpenMind biblio ref
Hogendijk, Jan. 2001. “The Contributions by Abu Nasr Ibn ʿIrāq and Al-Ṣāghānī to the Theory of Seasonal Hour Lines on Astrolabes and Sundials”. Zeitschrift für Geschichte Der Arabisch-Islamischen Wissenschaften 14: 1-30.
 { Jan Hogendijk, 2001 #356 }