This is BibTeX, Version 0.99dThe top-level auxiliary file: meineArbeit.aux
The style file: ieeetr.bst
A level-1 auxiliary file: DeckblattTest.aux
Illegal, another \bibstyle command---line 191 of file meineArbeit.aux
 : \bibstyle
 :          {natdin}
I'm skipping whatever remains of this command
Database file #1: Bibliographie.bib
Too many commas in name 1 of "IBM Software Group, 2670 Queensview Drive, Ottawa, Ontario K2B 8K1, Canada" for entry Eclipse
while executing---line 963 of file ieeetr.bst
Too many commas in name 1 of "IBM Software Group, 2670 Queensview Drive, Ottawa, Ontario K2B 8K1, Canada" for entry Eclipse
while executing---line 963 of file ieeetr.bst
Warning--there's a number but no series in Extensions
(There were 3 error messages)