Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
I. Introduction, 386. — II. Comparative concentration of research activity in France and the United States, 388. — III. Comparative absolute firm size and research intensity in France and the United States, 391. — IV. Comparative seller concentration and research intensity in France and the United States, 400. — V. Firm size and research intensity in France, 403. — VI. Study of other industrial economies, 407. — VII. Conclusions, 408.