This is BibTeX, Version 0.99d
Capacity: max_strings=35307, hash_size=35307, hash_prime=30011
The top-level auxiliary file: data.aux
Illegal, another \bibdata command---line 4 of file data.aux
 : \bibdata
 :         {../empty}
I'm skipping whatever remains of this command
The style file: ../empty.bst
(There was 1 error message)