Chahine E, Laborde P, Renard Y. Spider XFEM, an extended finite element variant for partially unknown crack-tip displacement. TECM [Internet]. 2008 Jun. 11 [cited 2024 Nov. 15];17(5-7):625-36. Available from: https://journals.riverpublishers.com/index.php/EJCM/article/view/1819