Newman 1985 harvnb error: no target: CITEREFNewman1985 (pomoč); Newman 1991, str. ;57–103 harvnb error: no target: CITEREFNewman1991 (pomoč). It has been argued by Ahmad Y. Al-Hassan that the pseudo-Geber works were actually translated into Latin from the Arabic (see Al-Hassan, Ahmad Y. "The Arabic Origin of the Summa and Geber Latin Works: A Refutation of Berthelot, Ruska, and Newman Based on Arabic Sources", in: al-Hassan 2009, str. ;53–104 harvnb error: no target: CITEREFal-Hassan2009 (pomoč); also available online).
