@misc{indiciae038555d8163c,
  title = {Coal desulfurization process},
  author = {Hsu, G. C. and Gavalas, G. R. and Ganguli, P. S. and Kalfayan, S. H.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780023584},
  note = {Source identifier: 19780023584}
}