Tex - latex stack exchange is a question and answer site for users of tex, latex, context, and related typesetting systems. This is another case where egregs xpatch package comes in handy. I was using etal in the document text (not in the bibliography). Geoff this web site contains some latex tips, and briefly comments about the macro and spaces issue. The author mentions the package xspace, which according to him is a heuristic for defeating latex behavior of chomping a space following a macro in the case where the space was supposed to be preserved in the output. I didnt really read too much because i got to that site briefly and for. The default formatting in l a t e x documents is determined by the class used by that document. This default look can be changed and more functionalities can be added by means of a package. The citation scheme youre using tells latex to print the full list of authors at the first citation and the abbreviated one (with et al.). Bst (located in the bibtexbstnatbib subdirectory of your tex distribution) into your working directory and rename it to, say, myplainnat. (later, this file should be placed in your local texmf tree). (there should be four instances) and replace every instance with emphet. This package provides american physical society (aps) bibtex reference style (aps-nameyear. Pdf) showing how to use bibtex style file and how it would look like. Apart from the features unique to bib l a t e x, the package also incorporates core features of the following packages babelbib, bibtopic, bibunits, chapterbib, cite, inlinebib, mcite and mciteplus, mlbib, multibib, splitbib. board index latexs friends bibtex, biblatex and biber latex forum bibtex, biblatex and biber bibtex doesnt abbreviate to et al. Information and discussion about bibtex - the bibliography tool for latex documents. For a more detailed description of the natbib package, l a tex the source file natbib. Overview the natbib package is a reimplementation of the l a tex cite command, to work with both author-year and numerical citations. It is compatible with the standard bibliographic style files, such as plain. Bst, as well as with those for harvard, apalike, chicago, astron, authordate.