Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
In a duopoly model with vertical differentiation, if the firms do not cover the market, the lower-quality firm chooses a quality level exactly 4/7 of that of the higher-quality firm and chooses a price that is 2/7 of the price of the higher-quality firm. Copyright 1992 by Blackwell Publishing Ltd.