So many Wikidata items have a “described at URL” (P973) statement, where we do not have a property to use an ID, or the source does not use IDs. I was wondering if some URL domains have accumulated in larger numbers for P973, which would make them candidates for properties. So I listed and counted the (unique) URLs from all such statements, and counted the domain names from that. Results:
| Domain name | Occurrences |
|---|---|
| www.sciencedirect.com | 499,443 |
| link.springer.com | 151,935 |
| digicol.dpm.org.cn | 127,400 |
| www.tandfonline.com | 102,998 |
| journals.sagepub.com | 75,685 |
| clevelandart.org | 67,668 |
| onlinelibrary.wiley.com | 59,064 |
| ieeexplore.ieee.org | 48,151 |
| iopscience.iop.org | 47,917 |
| www.mdpi.com | 44,406 |
| www.cambridge.org | 36,292 |
| linkinghub.elsevier.com | 34,884 |
| academic.oup.com | 34,047 |
| www.ssrn.com | 28,785 |
| www.nber.org | 28,776 |
| www.jstage.jst.go.jp | 24,556 |
| link.aps.org | 23,120 |
| parismuseescollections.paris.fr | 19,194 |
| journals.lww.com | 18,481 |
| data.collectienederland.nl | 17,959 |
| www.kci.go.kr | 17,668 |
| www.dbpia.co.kr | 17,616 |
| pubs.acs.org | 17,389 |
| dati.beniculturali.it | 17,034 |
| journals.ashs.org | 16,875 |
| muse.jhu.edu | 15,841 |
| www.emerald.com | 14,996 |
| pubs.aip.org | 13,749 |
| www.vanbommelvandam.nl | 13,653 |
| www.degruyter.com | 12,675 |
| xlink.rsc.org | 12,022 |
| www.inderscience.com | 11,460 |
| www.digiporta.net | 11,442 |
| datos-geodesia.ign.es | 11,246 |
| www.wga.hu | 11,173 |
| www.victorianresearch.org | 10,610 |
| www.indianjournals.com | 10,364 |
| kokoelmat.fng.fi | 10,150 |
These are the domain names with >10K occurences. Full list here. I hope this list will lead to some new property propositions!