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Bordas, Stephane PA and Natarajan, Sundararajan and Kerfriden, Pierre and Augarde, Charles Edward and Mahapatra, Roy D and Rabczuk, Timon and Dal Pont, Stefano (2011) On the performance of strain smoothing for quadratic and enriched finite element approximations (XFEM/GFEM/PUFEM). In: International Journal for Numerical Methods in Engineering, 86 (4-5, S). pp. 637-666.