@misc{indiciaed3612ede5cea,
  title = {Numerical difficulties associated with using equality constraints to achieve multi-level decomposition in structural optimization},
  author = {Thareja, R. and Haftka, R. T.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860054067},
  note = {Source identifier: 19860054067}
}