Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
I. Introduction, 227. — II. Akerman's argument, 229. — III. Reformulation in terms of adaptive expectations, 230. — IV. An alternative but equivalent formulation, 233. — V. Some empirical results, 236. — VI. More complicated models, 238. — VII. Conclusions, 240.