@misc{indiciaeceaae475a1dd,
  title = {ELAS: A general-purpose computer program for the equilibrium problems of linear structures. Volume 2: Documentation of the program},
  author = {Utku, S.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19740011436},
  note = {Source identifier: 19740011436}
}