@misc{indiciaec82e9faeba00,
  title = {The remote sensing of air pollution from coal utilization},
  author = {Harney, B. M. and Mccrea, D. H. and Forney, A. J.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720021713},
  note = {Source identifier: 19720021713}
}