Full reference OpenMind biblio ref
Dizer, Muammer. 1977. “The Daʾirat Al-Muʿaddal in the Kandilli Observatory, and Some Remarks on the Earliest Recorded Islamic Values on the Magnetic Declination”. Journal for the History of Arabic Science 1 (2): 257-60.
{ Muammer Dizer, 1977 #11951 }