@misc{indiciaea510595a81c9,
  title = {Catalytic hollow spheres},
  author = {Wang, Taylor G. and Elleman, Daniel D. and Lee, Mark C. and Kendall, Jr., James M.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/20080005929},
  note = {Source identifier: 20080005929}
}