This is BibTeX, Version 0.99c (Web2C 7.5.4) The top-level auxiliary file: merkulov.aux The style file: amsalpha.bst Database file #1: merkulov.bib You're missing a field name---line 599 of file merkulov.bib : : %url = {http://www.citebase.org/cgi-bin/citations?id=oai:arXiv.org:math/0506170}, (Error may have been on previous line) I'm skipping whatever remains of this entry Warning--missing title in Ko2 Warning--missing publisher in Ko2 Warning--missing pages in MV Warning--missing pages in V You've used 12 entries, 2624 wiz_defined-function locations, 629 strings with 5329 characters, and the built_in function-call counts, 3938 in all, are: = -- 357 > -- 112 < -- 10 + -- 33 - -- 31 * -- 303 := -- 597 add.period$ -- 12 call.type$ -- 12 change.case$ -- 62 chr.to.int$ -- 11 cite$ -- 16 duplicate$ -- 194 empty$ -- 358 format.name$ -- 53 if$ -- 815 int.to.chr$ -- 2 int.to.str$ -- 0 missing$ -- 23 newline$ -- 46 num.names$ -- 32 pop$ -- 94 preamble$ -- 1 purify$ -- 75 quote$ -- 0 skip$ -- 135 stack$ -- 0 substring$ -- 237 swap$ -- 23 text.length$ -- 10 text.prefix$ -- 10 top$ -- 0 type$ -- 92 warning$ -- 4 while$ -- 33 width$ -- 15 write$ -- 130 (There was 1 error message)