@misc{indiciaecb98522a0666,
  title = {Composite Blade Structural Analyzer (COBSTRAN) theoretical/programmer's manual},
  author = {Aiello, Robert A. and Chamis, Christos C.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900000865},
  note = {Source identifier: 19900000865}
}