Debbabi, Imen, Zohra Sendi, & H´edi BelHadjSalah. " A comparison between the improved element-free Galerkin method and the element-free Galerkin method for 2D potential and elasticity problems." Computer Assisted Methods in Engineering and Science [Online], 23.2–3 (2016): 87–107. Web. 12 Apr. 2021