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|---|---|---|
| 3 |      | Helmut A. Abt: The frequencies of multinational papers in various sciences. Scientometrics 72(1): 105-115 (2007) |
| 2 | | Helmut A. Abt: The publication rate of scientific papers depends only on the number of scientists. Scientometrics 73(3): 281-288 (2007) |
| 1 | | Helmut A. Abt: The future of single-authored papers. Scientometrics 73(3): 353-358 (2007) |