On 15.04.2011 10:59, Sergey Tikhotsky wrote:
> This is 8-bit Big BibTeX version 0.99c
> Implementation:  C for Unix
> Release version: 3.71 (31 May 2005)
>
> The 8-bit codepage and sorting file: cp1251.csf
> The top-level auxiliary file: main.aux
> Sorry---you've exceeded BibTeX's buffer size 3000

Запускайте bibtex8 c параметром -H:
bibtex8 -H -c cp1251 aux-file