@misc{indiciaec5ad4b3dfcd2,
  title = {Approximation method for configuration optimization of trusses},
  author = {Hansen, Scott R. and Vanderplaats, Garret N.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900031102},
  note = {Source identifier: 19900031102}
}