@article{HeiligenthalSkiera2009,
  author    = {Jeanette Heiligenthal and Bernd Skiera},
  title     = {How incentive-based customer acquisition affects the value of the customer base},
  journal   = {EFL quarterly : an E-Finance Lab publication},
  volume    = {2009},
  number    = {4},
  pages     = {4 -- 5},
  year      = {2009},
}