@article{JiaAnitescuGhorashietal.2014,
  author    = {Yue Jia and Cosmin Anitescu and Seyed Shahram Ghorashi and Timon Rabczuk and D. Dias-da-Costa},
  title     = {Extended Isogeometric Analysis for Material Interface Problems},
  journal   = {Journal of Applied Mathematics},
  year      = {2014},
}