I. V. Singh and  A. Singh,  A Meshfree Solution of Tow-Dimensional Potential Flow Problems.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2009, vol. 27(3). 290 - 300
    [viewed 21 October 2019]. Available from: https://publications.waset.org/pdf/1478.