@article{Rothschild:2009ID,
  author = "Rothschild, Richard E.",
  title = "{Positron Propogation and the INTEGRAL/SPI 511 keV Bulge/Disk Ratio}",
  doi = "10.22323/1.067.0028",
  journal = "PoS",
  year = 2009,
  volume = "Integral08",
  pages = "028"
}