: While commonly a file extension for compressed archives, in this specific context, it is likely a misinterpretation of a citation field or a filename for supplementary material (such as simulation codes) often provided with EPJ ST papers. Likely Context
: These may represent placeholders for a volume number, page range, or specific article identifier within that journal's database. 00 X E P J S 00 X rar
Equilibrium Points and Surface Dynamics About Comet 67P/ ... - arXiv : While commonly a file extension for compressed
Scientific papers in this journal often use a DOI format like 10.1140/epjs/s11734-xxx-xxxxx-x . If you are looking for a specific paper, it may be related to one of the following recent "Special Topics" often featured in the journal: in this specific context