Table 3 The top 20 most frequently...

Table 3

The top 20 most frequently co-authored international country pairs, data extracted from journals Chum, LLC/DSH, and DHQ, 1966–2017

Rank	Country pair	No. co-authored articles	Rank	Country pair	No. co-authored articles
1	UK – USA	36	11	Netherlands –Germany	7
2	USA – Canada	29	12	UK –China	6
3	UK –Canada	19	13	Netherlands –Belgium	5
4	UK –Germany	19	14	Netherlands –Italy	5
5	USA – Australia	12	15	Germany –Canada	4
6	USA – Germany	10	16	UK –Finland	4
7	USA – Ireland	10	17	UK –Ireland	4
8	UK –Australia	8	18	Spain –Italy	4
9	UK –Netherlands	8	19	UK –Japan	4
10	USA – Netherlands	8	20	Spain –Netherlands	4

Rank	Country pair	No. co-authored articles	Rank	Country pair	No. co-authored articles
1	UK – USA	36	11	Netherlands –Germany	7
2	USA – Canada	29	12	UK –China	6
3	UK –Canada	19	13	Netherlands –Belgium	5
4	UK –Germany	19	14	Netherlands –Italy	5
5	USA – Australia	12	15	Germany –Canada	4
6	USA – Germany	10	16	UK –Finland	4
7	USA – Ireland	10	17	UK –Ireland	4
8	UK –Australia	8	18	Spain –Italy	4
9	UK –Netherlands	8	19	UK –Japan	4
10	USA – Netherlands	8	20	Spain –Netherlands	4