@book{hacker:2000,
  address = {München},
  author = {Hacker, Rupert},
  edition = {7., neubearb.},
  interhash = {e28c1f68329674315e2684f7b9c25ff1},
  intrahash = {31022dc0fb01bf7dab9ebb4d4c32dd64},
  isbn = {3598113943 9783598113949},
  language = {german},
  publisher = {K.G. Saur},
  refid = {45542352},
  title = {Bibliothekarisches Grundwissen},
  url = {http://www.worldcat.org/search?qt=worldcat_org_all&q=3598113943},
  year = 2000
}

@book{Hefley.2008,
  address = {Boston, MA},
  author = {Hefley, Bill and Murphy, Wendy},
  interhash = {9776b7e32ca9edfa1a443ee765fb0843},
  intrahash = {85fa6f327c8c7c6f96405f0a65038dee},
  isbn = {9780387765778},
  publisher = {Springer Science+Business Media LLC},
  series = {Springer-11643 /Dig. Serial]},
  title = {Service Science, Management and Engineering Education for the 21st Century},
  url = {http://dx.doi.org/10.1007/978-0-387-76578-5},
  year = 2008
}