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General statistics of coauthorship in IR
| 1956-1980 | 1981-1990 | 1991-2000 | 2001-2008 | |
|---|---|---|---|---|
| % of Single authored papers | 69.53% | 62.86% | 29.96% | 15.48% |
| % of coauthored papers (2 authors) | 18.05% | 20.95% | 33.04% | 31.00% |
| % of coauthored papers (3 authors) | 7.39% | 9.80% | 20.78% | 26.41% |
| % of coauthored papers (4 authors) | 3.20% | 3.83% | 8.85% | 15.05% |
| % of coauthored papers (>4 authors) | 1.83% | 2.56% | 7.38% | 12.05% |
