This page is what I am referring to. I have often wondered how journals TeX their articles like this, and the trick that I have tried in the past of saving the pdf and looking at the info with Preview (on a Mac) doesn't provide me with any additional information.
Elsevier uses an in-house LaTeX document class that's available in TeX Live and on CTAN:
elsarticle.cls; the example documents in the distribution show similar output, apart from the header in the first page and the font (Elsevier uses its own).
You can obtain a font quite similar to Elsevier's by loading also
The class is released under the LPPL and I've found no statement that it can be used only for submission to Elsevier's journals.