Mohammad Hosseini,  Ultrafast Transistor Laser Containing Graded Index Separate Confinement Heterostructure.   journal   = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    December 2023, vol. 204(12). 159 - 162
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10013425.