@inproceedings{ifip2009,
 author = {Fabrizio Baiardi and Claudio Telmon and Daniele Sgandurra},
 title = {{Modeling and Managing Risk in Billing Infrastructures}},
 booktitle = {{Critical Infrastructure Protection III}},
 year = {2009},
 isbn = {978-3-642-04797-8},
 pages = {51--64},
 doi = {10.1007/978-3-642-04798-5_4},
 publisher = {Springer Boston}
 }