WASET
    A. Manallah and  C. Meier,  Surface Topography Measurement by Confocal Spectral Interferometry.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    May 2017, vol. 127(7). 273 - 276
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/10007419.