@article{939928,
      author = {Kumar, V., and Reinartz, Werner,},
      url = {http://library.usi.edu/record/939928},
      title = {Customer Relationship Management : concept, strategy, and  tools /},
      doi = {https://doi.org/10.1007/978-3-662-55381-7},
      recid = {939928},
      pages = {1 online resource (xxv, 411 pages) :},
}