@misc{indiciaeb5743e2d5db9,
  title = {Some spectral approximation of one-dimensional fourth-order problems},
  author = {Bernardi, Christine and Maday, Yvon},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890017257},
  note = {Source identifier: 19890017257}
}