Yaseen. H. Mahmood, Abdl majeed.E.IbrahIm and Omar A .jadan 2023. Design and installation of (flower sun) a concentration dish and study its parameters. Tikrit Journal of Pure Science. 22, 11 (Feb. 2023), 83–86. DOI:https://doi.org/10.25130/tjps.v22i11.919.