O. S. Shafeeq, “Nonlinear optical properties of polymer [PMMA] thin films doped with dye lasing compounds, Rhodamine 6G and Acriflavine in chloroform solvent by using dip coating method”, IJP, vol. 15, no. 35, pp. 125–132, Oct. 2018, doi: 10.30723/ijp.v15i35.61.