The reference likely refers to a compressed archive containing a specific academic working paper or a supporting document for a publication. Based on common academic numbering, this most frequently points to:
: Article ID 21461 (DOI: 10.1002/asi.21461), titled "P-Rank: An indicator measuring prestige in heterogeneous scholarly networks," published in 2011. 21461.rar
: A 2020 document regarding "Assessment and Control of Deoxyribonucleic Acid-Reactive (Mutagenic) Impurities in Pharmaceuticals". The reference likely refers to a compressed archive
in this context are often used by researchers to share datasets, supplementary code, or pre-print versions of these papers on academic repositories or personal faculty pages. JASIST: Vol 62, No 3 - ACM Digital Library No 3 - ACM Digital Library