@inproceedings{Rothschild:2009ID, author = "Rothschild, Richard E.", title = "{Positron Propogation and the INTEGRAL/SPI 511 keV Bulge/Disk Ratio}", doi = "10.22323/1.067.0028", booktitle = "Proceedings of 7th INTEGRAL Workshop {\textemdash} PoS(Integral08)", year = 2009, volume = "067", pages = "028" }