@article{
  author = {Karami Khorramabadi, M},
  title = {Free Vibration of Functionally Graded Beams with Piezoelectric Layers Subjected to Axial Load},
  journal = {Journal of Solid Mechanics},
  year = {2009},
  volume = {1},
  issue = {1},
  pages = {22-28},
  doi = {},
  url = {https://sanad.iau.ir/fa/Article/908924}
}