...yes Katja, that´s right.
Birgit Mager is "the expert" in service design here in Germany.
And she just came up with a new book (again only in german):
Birgit Mager & Michael Gais
Service Design. München 2009 (UTB 3113)
for more details:
http://www.utb.de/katalog_suchen_detailseite.jsp?buchid=1922
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