@misc{indiciaee3ce52bee773,
  title = {The three-dimensional Event-Driven Graphics Environment (3D-EDGE)},
  author = {Freedman, Jeffrey and Hahn, Roger and Schwartz, David M.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940016869},
  note = {Source identifier: 19940016869}
}