@misc{indiciaef18b0963cfbb,
  title = {An algorithm for solving the system-level problem in multilevel optimization},
  author = {Balling, R. J. and Sobieszczanski-Sobieski, J.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950011693},
  note = {Source identifier: 19950011693}
}