Catholic Encyclopedia: Avicenna
Arabian physician and philosopher, born in Bokhara, died in Northern Persia.
www.newadvent.org/cathen/02157a.htm
Medieval Sourcebook: Ibn Sina (Avicenna)
In addition to works on medicine he authored religious tracts, poems, works on philosophy, on logic, as physics, on mathematics, and on astronomy.
www.fordham.edu/halsall/source/1020Avicenna-Medicine.html