Md. Armin Islam and  Les Dallin and  Mark Boland and  W. J. Zhang,  Design Optimization of a Compact Quadrupole Electromagnet for CLS 2.0.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2019, vol. 148(4). 260 - 263
    [viewed 23 October 2019]. Available from: https://publications.waset.org/pdf/10010304.