@article{D{\"o}litzscherSulistioReichetal.2011,
  author    = {D{\"o}litzscher, Frank and Sulistio, Anthony and Reich, Christoph and Kuijs, Hendrik and Wolf, David},
  title     = {Private cloud for collaboration and e-Learning services: from IaaS to SaaS},
  journal   = {Computing},
  volume    = {91.2011},
  number    = {1},
  issn      = {1436-5057},
  doi       = {10.1007/s00607-010-0106-z},
  pages     = {23 -- 42},
  year      = {2011},
  language  = {en}
}