Impact of new-style BHL DOIs "10.5962/p."

DOI prefixes in BHL

Typically different publishers have their own unique DOI prefix, but this can change as publishers merge, or acquire new content from other publishers. These are the prefixes for content hosted by BHL. Note that 10.5962 is the BHL prefix.

prefix	count
10.5962	169883
10.2307	13462
10.1080	13021
10.3897	11869
10.1111	6603
10.1086	3482
10.1155	3204
10.5479	2690
10.1071	2254
10.1093	2153
10.1007	2007
10.1002	1970
10.22621	1842
10.1636	1022
10.7751	834
10.58828	820
10.55360	722
10.1206	613
10.21805	585
10.5431	550
10.3853	541
10.4039	491
10.24199	472
10.3120	420
10.1640	362
10.18195	258
10.3417	236
10.18785	228
10.1017	202
10.3160	188
10.5248	168
10.21829	165
10.3101	150
10.1590	112
10.1676	98
10.3099	61
10.3850	60
10.3157	56
10.4003	43
10.17082	35
10.53060	34
10.3106	20
10.26492	17
10.2475	14
10.1037	14
10.4102	13
10.3158	12
10.4095	10
10.26515	7
10.2172	7
10.22201	4
10.1126	4
10.1098	4
10.4067	3
10.3406	3
10.1038	3
10.5358	2
10.3996	2
10.3133	2
10.1515	2
10.1242	2
10.1144	2
I 10.22201	1
10.5852	1
10.5531	1
10.5281	1
10.36960	1
10.3411	1
10.31274	1
10.2737	1
10.15281	1
10.1146	1
10.1016	1
1

Non BHL DOIs in BHL

DOIs minted by other organisations, may be commercial publishers, repositories, or BHL members.

count
74242

New style BHL DOIs

Total number of DOIs minted as part of PIWG activities.

prefix	count
10.5962/p.	33698

New style BHL DOIs minted each year

Activity for each year.

year	count
2020	46
2021	11129
2022	4962
2023	7390
2024	10171

When does Unpaywall say BHL is best?

Unpaywall has a database of open access versions of articles, which includes content in BHL. Here we count the number of non-BHL DOIs where BHL is the "best" source (an example is 10.1002/fedr.19110090704, best viewed in Chrome or Firefox with the Unpaywall extension). This is a measure of how much BHL is enabling access to paywalled articles, and depends on BHL adding external DOIs to its content.

count
41890

Are people citing these new DOIs?

OpenCitations is building a database of citations sourced from CrossRef and elsewhere. Citations are pairs of DOIs. We can count the number of citations for works in BHL with new style DOIs

count
54470

Top ten cited DOIs in OpenCitations

These are the most cited articles with new BHL DOIs.

doi	count
10.5962/p.325716	544
10.5962/p.313819	244
10.5962/p.234849	217
10.5962/p.324722	212
10.5962/p.234818	202
10.5962/p.185944	181
10.5962/p.185864	172
10.5962/p.258046	170
10.5962/p.185316	168
10.5962/p.314160	164

If the new DOIs were a researcher what would be their h-index?

The h-index is defined as the maximum value of h such that the given author/journal has published at least h papers that have each been cited at least h times. Wikipedia. See Winker K, Withrow JJ (2013) Small collections make a big impact. Nature 493(7433):480–480. https://doi.org/10.1038/493480b

h-index: 73

How relevant are articles with new-style BHL DOIs?

If articles with new style DOIs are relevant to current researchers then we would expect to see them cited in recently published papers. This table lists the number of citations of new DOI in each decade, showing that recently papers do indeed cite BHL content. Note that citation links are continually updated, so that these newly minted BHL DOIs are enabling citation links to be created between works have been published long before BHL began.

decade	count
2020	9454
2010	19691
2000	9698
1990	5238
1980	4326
1970	2553
1960	1614
1950	748
1940	413
1930	384
1920	90
1910	40
1900	20
1890	2

rdmpage/bhl-piwg-stats