@article{1966,
  author = {Seong Song and Glaucio Paulino},
  title = {Dynamic stress intensity factors for homogeneous and smoothly heterogeneous materials using the interaction integral method},
  year = {2006},
  journal = {International Journal of Solids and Structures},
  volume = {43},
  number = {16},
  pages = {4830{\textendash}4866},
  publisher = {Elsevier},
}