WASET
    D. D. Wang and  J.C. Lam and  Z. H. Mai,  Tailoring the Sharpness of Tungsten Nanotips via Laser Irradiation Enhanced Etching in KOH.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2013, vol. 73(1). 41 - 43
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/5318.