Debbabi, Imen, 		Sendi, Zohra, AND 		BelHadjSalah, H´edi.
" A comparison between the improved element-free Galerkin method and the element-free Galerkin method for 2D potential and elasticity problems" <em>Computer Assisted Methods in Engineering and Science</em> [Online], Volume 23 Number 2–3 (21 July 2017)