Abbas Ali Mahmood Karwi,  Alignment of Emission Gamma Ray Sources with Nai(Ti) Scintillation Detectors by Two Laser Beams to Pre-Operation using Alternating Minimization Technique.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    March 2012, vol. 63(3). 286 - 288
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/9730.