: This is the common abbreviation used in Digital Object Identifiers (DOIs) and citations for The European Physical Journal Special Topics .

: These may represent placeholders for a volume number, page range, or specific article identifier within that journal's database.

: Papers often dedicated to specific researchers, such as the late Prof. Philip J. Siemens .

: Many authors provide supplementary RAR or ZIP files containing the simulation codes used in their research.

Equilibrium Points and Surface Dynamics About Comet 67P/ ... - arXiv