@misc{indiciae2264f2a3db1a,
  title = {Periodic structures with time-varying loads},
  author = {Epp, Larry W. and Chan, Chi H. and Mittra, Raj},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920057666},
  note = {Source identifier: 19920057666}
}