@misc{indiciae19601a8ae3d9,
  title = {Chemical structures of coal lithotypes before and after CO2 adsorption as investigated by advanced solid-state 13C nuclear magnetic resonance spectroscopy},
  author = {X. Cao and Maria Mastalerz and M.A. Chappell and L.F. Miller and Y. Li and J. Mao},
  year = {2011},
  doi = {10.1016/j.coal.2011.08.003},
  url = {https://pubs.usgs.gov/publication/70034363},
  note = {Source identifier: 70034363}
}