@misc{indiciaec2f3ced86035,
  title = {An improved multilevel optimization approach for the design of complex engineering systems},
  author = {Barthelemy, J.-F. M. and Riley, M. F.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19860054215},
  note = {Source identifier: 19860054215}
}