1. Barakat, N., Hamed, A.M., et al.: Study of fluid flow using speckle interferometry. Optik 76(3), 102–104 (1987)
2. Cox, I.J., Sheppard, C.J.R., Wilson, T.: Super resolution by confocal fluorescent microscopy. Optik 60, 391 (1982)
3. Goodman, J.W.: Introduction to Fourier optics. Roberts and Company publishers, Greenwood Village (1968)
4. Göorlitz, F., Hoyer, P., Falk, H.J., Kastrup, L., Engelhardt, J., Hell, S.W.: A STED microscope designed for routine biomedical applications. Prog. Electromagn. Res. 147, 57–68 (2014). https://doi.org/10.2528/Pier14042708
5. Hamed, A.M.: Study of graded index and truncated apertures using speckle images. Precision Instrument and Mech. 3(1), 144-152. https://doi.org/10.1117/1.3530085