This is BibTeX, Version 0.99c (Web2C 7.3.1) The top-level auxiliary file: revtex4.aux White space in argument---line 17 of file revtex4.aux : \bibdata{basename : of .bib file} I'm skipping whatever remains of this command The style file: apsrev.bst I found no \citation commands---while reading file revtex4.aux I found no database files---while reading file revtex4.aux Reallocated wiz_functions (elt_size=4) to 6000 items from 3000. You've used 0 entries, 3411 wiz_defined-function locations, 1151 strings with 9998 characters, and the built_in function-call counts, 46 in all, are: = -- 0 > -- 0 < -- 0 + -- 0 - -- 0 * -- 2 := -- 9 add.period$ -- 0 call.type$ -- 0 change.case$ -- 0 chr.to.int$ -- 0 cite$ -- 0 duplicate$ -- 0 empty$ -- 1 format.name$ -- 0 if$ -- 1 int.to.chr$ -- 1 int.to.str$ -- 1 missing$ -- 0 newline$ -- 15 num.names$ -- 0 pop$ -- 0 preamble$ -- 1 purify$ -- 0 quote$ -- 0 skip$ -- 1 stack$ -- 0 substring$ -- 0 swap$ -- 0 text.length$ -- 0 text.prefix$ -- 0 top$ -- 0 type$ -- 0 warning$ -- 0 while$ -- 0 width$ -- 0 write$ -- 14 (There were 3 error messages)