Full reference OpenMind biblio ref
Madwar, Muḥammad, Imām Aḥmad, and Ibrāhīm Maḏkūr. 1980. Ibn Sīnā, Abū ʿAlī Ibn ʿAbdallāh: Al-Shifāʾ; ʿIlm Al-Hayʾa (Part 4 Of Mathematics [Al-Riyāḍiyyāt]). Cairo: al-Hayʾaẗ al-Miṣriyyaẗ al-ʿĀmmaẗ li-al-Kitāb.
{ Muḥammad Madwar, Imām Aḥmad, Ibrāhīm Maḏkūr, 1980 #554 }