@article{1506,
  author = {Wilfredo Rubio and Em{\'\i}lio Silva and Glaucio Paulino},
  title = {Toward optimal design of piezoelectric transducers based on multifunctional and smoothly graded hybrid material systems},
  year = {2009},
  journal = {Journal of Intelligent Material Systems and Structures},
  volume = {20},
  number = {14},
  pages = {1725{\textendash}1746},
  publisher = {Sage Publications Sage UK: London, England},
}