Loai Ben Naji and  Osama M. Ibrahim and  Khaled J. Al-Fadhalah,  Formation of Protective Aluminum-Oxide Layer on the Surface of Fe-Cr-Al Sintered-Metal-Fibers via Multi-Stage Thermal Oxidation.   journal   = {International Journal of Chemical and Materials Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2018, vol. 143(11). 596 - 599
    [viewed 11 April 2021]. Available from: https://publications.waset.org/pdf/10009752.