@misc{indiciaeeba5a11ecaca,
  title = {Mass loading effects on vibration of ring and shell structures},
  author = {Lee, S. Y. and Liyeos, J. G. and Tang, S. S.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690003919},
  note = {Source identifier: 19690003919}
}