@misc{indiciaebb0cc323d25a,
  title = {Unsteady Adjoint Approach for Design Optimization of Flapping Airfoils},
  author = {Lee, Byung Joon and Liou, Meng-Sing},
  year = {2012},
  url = {https://ntrs.nasa.gov/citations/20120012844},
  note = {Source identifier: 20120012844}
}