@conference{5373,
  author = {Q. Wang},
  title = {Exploring the interstellar medium with X-ray shadows},
  year = {1994},
  publisher = {New York: American Institute of Physics (AIP)},
  address = {College Park, Maryland},
  doi = {10.1063/1.46672},
  note = {JILA Pub. 5151},
}