@article{
  author = {Isvandzibaei, M.R, Awasare, P.J},
  title = {Comparison of Two Kinds of Functionally Graded Cylindrical Shells with Various Volume Fraction Laws for Vibration Analysis},
  journal = {Journal of Solid Mechanics},
  year = {2009},
  volume = {1},
  number = {3},
  pages = {190-200},
  doi = {}
}