@article{291,
  author = {William Buttlar and Glaucio Paulino and Seong Song},
  title = {Application of graded finite elements for asphalt pavements},
  year = {2006},
  journal = {Journal of engineering mechanics},
  volume = {132},
  number = {3},
  pages = {240{\textendash}249},
  publisher = {American Society of Civil Engineers},
}